message stringlengths 2 67k | message_type stringclasses 2 values | message_id int64 0 1 | conversation_id int64 463 109k | cluster float64 19 19 | __index_level_0__ int64 926 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,704 | 19 | 37,408 |
Tags: games, greedy, sortings
Correct Solution:
```
t = int(input())
while(t>0):
t -= 1
line = input()
ones = []
i = 0
n = len(line)
while i < n:
tmp = 0
if line[i] == '1':
while i < n and line[i] == '1':
tmp += 1
i += 1
ones.append(tmp)
else:
i = i + 1
# print(ones)
a = 0
ones = sorted(ones, reverse=True)
while len(ones) > 0:
a += ones.pop(0)
if len(ones) > 0:
ones.pop(0) #b moves
print(a)
``` | output | 1 | 18,704 | 19 | 37,409 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,705 | 19 | 37,410 |
Tags: games, greedy, sortings
Correct Solution:
```
def solv():
s=list(map(int,input()))
v=[]
sm=0
for n in s:
if n:
sm+=1
else:
v.append(sm)
sm=0
if sm:v.append(sm)
v.sort(reverse=True)
res=0
for n in range(0,len(v),2):res+=v[n]
print(res)
for _ in range(int(input())):solv()
``` | output | 1 | 18,705 | 19 | 37,411 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,706 | 19 | 37,412 |
Tags: games, greedy, sortings
Correct Solution:
```
num = int(input())
for i in range(num):
ans=0
s = input()
a = s.split("0")
arr = []
for each in a:
if '1' in each:
arr.append(len(each))
arr.sort(reverse=True)
for i in range(len(arr)):
if i%2 == 0:
ans+=arr[i]
print(ans)
``` | output | 1 | 18,706 | 19 | 37,413 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,707 | 19 | 37,414 |
Tags: games, greedy, sortings
Correct Solution:
```
n = int(input())
for _ in range(n):
s = input()
cnt=0
a=[]
for i in range(len(s)):
if s[i]=='1':
cnt+=1
else:
a.append(cnt)
cnt=0
if cnt!=0:
a.append(cnt)
cnt=0
a.sort(reverse=True)
print(sum([a[i] for i in range(0,len(a),2)]))
``` | output | 1 | 18,707 | 19 | 37,415 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,708 | 19 | 37,416 |
Tags: games, greedy, sortings
Correct Solution:
```
#!/usr/bin/env python
import os
import re
import sys
from bisect import bisect, bisect_left, insort, insort_left
from collections import Counter, defaultdict, deque
from copy import deepcopy
from decimal import Decimal
from fractions import gcd
from io import BytesIO, IOBase
from itertools import (
accumulate, combinations, combinations_with_replacement, groupby,
permutations, product)
from math import (
acos, asin, atan, ceil, cos, degrees, factorial, hypot, log2, pi, radians,
sin, sqrt, tan)
from operator import itemgetter, mul
from string import ascii_lowercase, ascii_uppercase, digits
def inp():
return(int(input()))
def inlist():
return(list(map(int, input().split())))
def instr():
s = input()
return(list(s[:len(s)]))
def invr():
return(map(int, input().split()))
# For getting input from input.txt file
#sys.stdin = open('input.txt', 'r')
# Printing the Output to output.txt file
#sys.stdout = open('output.txt', 'w')
def main():
t = inp()
for _ in range(t):
a = input()
res = []
c = 0
for i in a:
if i == "1":
c += 1
else:
if c != 0:
res.append(c)
c = 0
if c != 0:
res.append(c)
ans = 0
res = sorted(res, reverse=True)
for i in range(len(res)):
if i % 2 == 0:
ans += res[i]
print(ans)
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
self.write = self.buffer.write if self.writable else None
def read(self):
while True:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
if not b:
break
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines = 0
return self.buffer.read()
def readline(self):
while self.newlines == 0:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
self.newlines = b.count(b"\n") + (not b)
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines -= 1
return self.buffer.readline()
def flush(self):
if self.writable:
os.write(self._fd, self.buffer.getvalue())
self.buffer.truncate(0), self.buffer.seek(0)
class IOWrapper(IOBase):
def __init__(self, file):
self.buffer = FastIO(file)
self.flush = self.buffer.flush
self.writable = self.buffer.writable
self.write = lambda s: self.buffer.write(s.encode("ascii"))
self.read = lambda: self.buffer.read().decode("ascii")
self.readline = lambda: self.buffer.readline().decode("ascii")
sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
def input(): return sys.stdin.readline().rstrip("\r\n")
# endregion
if __name__ == "__main__":
main()
``` | output | 1 | 18,708 | 19 | 37,417 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,709 | 19 | 37,418 |
Tags: games, greedy, sortings
Correct Solution:
```
t=int(input())
for i in range(t):
n=input().split('0')
n.sort(reverse=True)
cnt=0
for i in range(0,len(n),2):
cnt+=len(n[i])
print(cnt)
``` | output | 1 | 18,709 | 19 | 37,419 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,710 | 19 | 37,420 |
Tags: games, greedy, sortings
Correct Solution:
```
tests = int(input())
for t in range(tests):
ls = input()
count = 0
one_list = []
res = 0
for item in ls:
if item == '1':
count += 1
else:
one_list.append(count)
count = 0
if count > 0:
one_list.append(count)
one_list = sorted(one_list)
for idx, item in enumerate(one_list[::-1]):
if idx % 2 == 0:
res += item
print(res)
``` | output | 1 | 18,710 | 19 | 37,421 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored. | instruction | 0 | 18,711 | 19 | 37,422 |
Tags: games, greedy, sortings
Correct Solution:
```
t = int(input())
while t:
s = input()
a = []
i = 0
while i < len(s):
if s[i] == '1':
j = i
while j < len(s) and s[j] == '1':
j += 1
a.append(j - i)
i = j
else:
i += 1
a.sort(reverse = True)
ans = 0
for i in range(0, len(a), 2):
ans += a[i]
print(ans)
t -= 1
``` | output | 1 | 18,711 | 19 | 37,423 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored.
Submitted Solution:
```
for _ in range(int(input())):
s=[len(i)for i in input().split('0')]
s.sort()
print(sum(s[-1::-2]))
``` | instruction | 0 | 18,712 | 19 | 37,424 |
Yes | output | 1 | 18,712 | 19 | 37,425 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored.
Submitted Solution:
```
for t in range(int(input())):
s = input().strip()
n = len(s)
ones = []
i = 0
sums = 0
while i<n-1:
if s[i]=='1':
sums += 1
if s[i+1]=='0':
ones.append(sums)
sums = 0
i += 1
if sums>0 and i==n-1:
ones.append(sums+1)
elif i==n-1 and s[i]=='1':
ones.append(1)
ones = sorted(ones, reverse=True)
result = 0
i = 0
while 2*i <len(ones):
result += ones[2*i]
i += 1
print(result)
``` | instruction | 0 | 18,713 | 19 | 37,426 |
Yes | output | 1 | 18,713 | 19 | 37,427 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored.
Submitted Solution:
```
n = int(input())
saida = []
for i in range(n):
s = 0
binario = input()
aux = []
cont = 0
for j in binario:
if j == "1":
cont += 1
else:
if cont > 0:
aux.append(cont)
cont = 0
if cont > 0:
aux.append(cont)
aux.sort()
for k in range(len(aux)-1, -1, -2):
s += aux[k]
saida.append(s)
for l in saida:
print(l)
``` | instruction | 0 | 18,714 | 19 | 37,428 |
Yes | output | 1 | 18,714 | 19 | 37,429 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored.
Submitted Solution:
```
def answer(A):
l=[]
count=0
for i in range(len(A)):
if A[i]=="1":
count+=1
else:
if count>0:
l.append(count)
count=0
if count>0:
l.append(count)
l.sort(reverse=True)
ans=0
for i in range(0,len(l),2):
ans+=l[i]
return ans
t=int(input())
for i in range(t):
n=input()
print(answer(n))
``` | instruction | 0 | 18,715 | 19 | 37,430 |
Yes | output | 1 | 18,715 | 19 | 37,431 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored.
Submitted Solution:
```
import math
t = int(input())
for i in range(t):
s = input()
s = s.strip('0').split('0')
arr = sorted([int(math.log10(int(n)) + 1) for n in s if n != ''], reverse=True)
ans = 0
while i < len(arr):
ans += arr[i]
i += 2
print(ans)
``` | instruction | 0 | 18,718 | 19 | 37,436 |
No | output | 1 | 18,718 | 19 | 37,437 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob play a game. They have a binary string s (a string such that each character in it is either 0 or 1). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in s and delete them.
For example, if the string is 10110, there are 6 possible moves (deleted characters are bold):
1. 10110 โ 0110;
2. 10110 โ 1110;
3. 10110 โ 1010;
4. 10110 โ 1010;
5. 10110 โ 100;
6. 10110 โ 1011.
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: 10110 โ 100 โ 1.
The game ends when the string becomes empty, and the score of each player is the number of 1-characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
Input
The first line contains one integer T (1 โค T โค 500) โ the number of test cases.
Each test case contains exactly one line containing a binary string s (1 โค |s| โค 100).
Output
For each test case, print one integer โ the resulting score of Alice (the number of 1-characters deleted by her).
Example
Input
5
01111001
0000
111111
101010101
011011110111
Output
4
0
6
3
6
Note
Questions about the optimal strategy will be ignored.
Submitted Solution:
```
for _ in range(int(input())):
s=list(input())
a=[]
c=0
x=0
if(all(x=='0' for x in s)):
print('0','ed')
elif(all(x=='1' for x in s)):
print(len(s))
else:
for i in range(len(s)):
if(s[i]=='1'):
c=c+1
else:
if(c!=0):
a.append(c)
c=0
if(s[-1]=='1'):
a.append(c)
a.sort(reverse=True)
for i in range(len(a)):
if(i%2==0):
x=x+a[i]
print(x)
``` | instruction | 0 | 18,719 | 19 | 37,438 |
No | output | 1 | 18,719 | 19 | 37,439 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,853 | 19 | 37,706 |
Tags: implementation
Correct Solution:
```
n=int(input())
f=input()
list(f)
out=0
for i in range(n,len(f),n):
if(f[i-1]==f[i-2] and f[i-2] == f[i-3]):
out=out+1
print(out)
``` | output | 1 | 18,853 | 19 | 37,707 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,854 | 19 | 37,708 |
Tags: implementation
Correct Solution:
```
#!/usr/bin/python3
n = int(input())
s = input()
print(len([1 for i in range(n, len(s), n) if len(set(list(s[i - 3:i]))) == 1]))
``` | output | 1 | 18,854 | 19 | 37,709 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,855 | 19 | 37,710 |
Tags: implementation
Correct Solution:
```
n = int(input());
s = input();
cnt = 0;
for i in range(len(s))[n::n]:
if s[i - 1] == s[i - 2] and s[i - 2] == s[i - 3]:
cnt += 1;
print(cnt);
``` | output | 1 | 18,855 | 19 | 37,711 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,856 | 19 | 37,712 |
Tags: implementation
Correct Solution:
```
n=int(input())
s=input()
nn=len(s)
ans=0
for i in range(n,nn,n):
if(s[i-1]+s[i-2]+s[i-3]=='aaa' or s[i-1]+s[i-2]+s[i-3]=='bbb'):
ans+=1
print(ans)
``` | output | 1 | 18,856 | 19 | 37,713 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,857 | 19 | 37,714 |
Tags: implementation
Correct Solution:
```
n=int(input())
s=input()
a,b=n,0
while a<len(s):
if s[a-3]==s[a-2]==s[a-1]:b+=1
a+=n
print (b)
``` | output | 1 | 18,857 | 19 | 37,715 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,858 | 19 | 37,716 |
Tags: implementation
Correct Solution:
```
n=int(input())
g=input()
r=0
for i in range(n,len(g),n):
if g[i-1] == g[i-2] == g[i-3]:
r+=1
print(r)
``` | output | 1 | 18,858 | 19 | 37,717 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,859 | 19 | 37,718 |
Tags: implementation
Correct Solution:
```
s, n, t = 0, int(input()), input()
print(sum(t[i - 3: i] in ['aaa', 'bbb'] for i in range((3 // n + 1) * n , len(t), n)))
``` | output | 1 | 18,859 | 19 | 37,719 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different. | instruction | 0 | 18,860 | 19 | 37,720 |
Tags: implementation
Correct Solution:
```
n = int(input())
s = input()
c = 0
for i in range(n,len(s),n):
tmp = s[i-3:i]
if 'a'in tmp and 'b' in tmp :
continue
c+=1
print(c)
``` | output | 1 | 18,860 | 19 | 37,721 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
n = int(input())
s = input()
ans = 0
for i in range(len(s)):
if i % n == 0 and i >= 3:
if s[i-1] == s[i-2] == s[i-3]:
ans += 1
print(ans)
``` | instruction | 0 | 18,861 | 19 | 37,722 |
Yes | output | 1 | 18,861 | 19 | 37,723 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
a=int(input());b=input();print(sum(b[i-1]==b[i-2]==b[i-3] for i in range(a,len(b),a)))
``` | instruction | 0 | 18,862 | 19 | 37,724 |
Yes | output | 1 | 18,862 | 19 | 37,725 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
n = int(input())
s = str(input())
sl = len(s)
d = 0
for i in range(n, sl, n):
if s[i-1] == s[i-2] and s[i-1] == s[i-3]:
d += 1
print(d)
``` | instruction | 0 | 18,863 | 19 | 37,726 |
Yes | output | 1 | 18,863 | 19 | 37,727 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
n=int(input())
s=input()
a,b=n,0
while a<len(s):
if s[a-1]==s[a-2]==s[a-3]:
b+=1
a+=n
print(b)
``` | instruction | 0 | 18,864 | 19 | 37,728 |
Yes | output | 1 | 18,864 | 19 | 37,729 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
n = int(input())
s = input()
i = n
ans = 0
while i < len(s):
if s[n - 1] == s[n - 2] and s[n - 2] == s[n - 3]:
ans += 1
i += n
print(ans)
``` | instruction | 0 | 18,865 | 19 | 37,730 |
No | output | 1 | 18,865 | 19 | 37,731 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
#!/usr/bin/python3
n = int(input())
s = input()
print(len([1 for i in range(n, len(s)) if len(set(list(s[i - 3:i]))) == 1]))
``` | instruction | 0 | 18,866 | 19 | 37,732 |
No | output | 1 | 18,866 | 19 | 37,733 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
n = int(input())
s = input()
cnt = 0
for i in range(n, len(s), n):
if s[n-1]==s[n-2] and s[n-1] == s[n-3]:
cnt += 1
print(cnt)
``` | instruction | 0 | 18,867 | 19 | 37,734 |
No | output | 1 | 18,867 | 19 | 37,735 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Everybody knows that the Berland citizens are keen on health, especially students. Berland students are so tough that all they drink is orange juice!
Yesterday one student, Vasya and his mates made some barbecue and they drank this healthy drink only. After they ran out of the first barrel of juice, they decided to play a simple game. All n people who came to the barbecue sat in a circle (thus each person received a unique index bi from 0 to n - 1). The person number 0 started the game (this time it was Vasya). All turns in the game were numbered by integers starting from 1. If the j-th turn was made by the person with index bi, then this person acted like that:
1. he pointed at the person with index (bi + 1) mod n either with an elbow or with a nod (x mod y is the remainder after dividing x by y);
2. if j โฅ 4 and the players who had turns number j - 1, j - 2, j - 3, made during their turns the same moves as player bi on the current turn, then he had drunk a glass of juice;
3. the turn went to person number (bi + 1) mod n.
The person who was pointed on the last turn did not make any actions.
The problem was, Vasya's drunk too much juice and can't remember the goal of the game. However, Vasya's got the recorded sequence of all the participants' actions (including himself). Now Vasya wants to find out the maximum amount of juice he could drink if he played optimally well (the other players' actions do not change). Help him.
You can assume that in any scenario, there is enough juice for everybody.
Input
The first line contains a single integer n (4 โค n โค 2000) โ the number of participants in the game. The second line describes the actual game: the i-th character of this line equals 'a', if the participant who moved i-th pointed at the next person with his elbow, and 'b', if the participant pointed with a nod. The game continued for at least 1 and at most 2000 turns.
Output
Print a single integer โ the number of glasses of juice Vasya could have drunk if he had played optimally well.
Examples
Input
4
abbba
Output
1
Input
4
abbab
Output
0
Note
In both samples Vasya has got two turns โ 1 and 5. In the first sample, Vasya could have drunk a glass of juice during the fifth turn if he had pointed at the next person with a nod. In this case, the sequence of moves would look like "abbbb". In the second sample Vasya wouldn't drink a single glass of juice as the moves performed during turns 3 and 4 are different.
Submitted Solution:
```
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
from sys import stdin
from itertools import islice
from collections import defaultdict
def take_i():
return list(map(int, stdin.readline().split()))
def main():
n, = take_i()
game = stdin.readline()
game = game[1:]
good = []
good.append("a"*(n-1))
good.append("b"*(n-1))
count = 0
for i in range(int(len(game)/n)):
table = game[i*n: (i+1)*n -1]
drink = table in good
if drink:
count += 1
print(count)
if __name__ == '__main__':
main()
``` | instruction | 0 | 18,868 | 19 | 37,736 |
No | output | 1 | 18,868 | 19 | 37,737 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,389 | 19 | 38,778 |
"Correct Solution:
```
N = int(input())
A = list(input().split())
def BubbleSort(C, N):
for i in range(N):
for j in range(N-1, i, -1):
if int(C[j][1]) < int(C[j-1][1]):
C[j], C[j-1] = C[j-1], C[j]
return C
def SelectionSort(C, N):
for i in range(N):
minj = i
for j in range(i, N):
if int(C[j][1]) < int(C[minj][1]):
minj = j
C[i], C[minj] = C[minj], C[i]
return C
C1 = BubbleSort(A[:], N)
C2 = SelectionSort(A[:], N)
print(' '.join(map(str,C1)))
print('Stable')
print(' '.join(map(str,C2)))
if C1 == C2:
print('Stable')
else:
print('Not stable')
``` | output | 1 | 19,389 | 19 | 38,779 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,390 | 19 | 38,780 |
"Correct Solution:
```
from collections import namedtuple
def BubbleSort(C, N):
for i in range(N):
for j in range(N-1, i, -1):
if C[j].value < C[j-1].value:
C[j], C[j-1] = C[j-1], C[j]
def SelectionSort(C, N):
for i in range(N):
minj = i
for j in range(i, N):
if C[j].value < C[minj].value:
minj = j
C[i], C[minj] = C[minj], C[i]
Card = namedtuple('Card', 'mark value')
n = int(input())
a = [Card(i[0], int(i[1])) for i in input().split()]
b = a[:]
BubbleSort(a, n)
SelectionSort(b, n)
print(" ".join([i.mark + str(i.value) for i in a]))
print("Stable")
print(" ".join([i.mark + str(i.value) for i in b]))
print("Stable" if a == b else "Not stable")
``` | output | 1 | 19,390 | 19 | 38,781 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,391 | 19 | 38,782 |
"Correct Solution:
```
N = int(input())
C = list(input().split())
_C = C.copy()
for i in range(N):
for j in range(N-1, i, -1):
if (C[j][1] < C[j-1][1]):
C[j], C[j-1] = C[j-1], C[j]
print(*C)
print("Stable")
for i in range(N):
m = i
for j in range(i, N):
if (_C[j][1] < _C[m][1]):
m = j
_C[i], _C[m] = _C[m], _C[i]
print(*_C)
if(C ==_C):
print("Stable")
else:
print("Not stable")
``` | output | 1 | 19,391 | 19 | 38,783 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,392 | 19 | 38,784 |
"Correct Solution:
```
import copy
n = int(input())
A = list(map(str,input().split()))
B = copy.copy(A)
def BubbleSort(A,n):
for i in range(n):
for j in range(n-1,i,-1):
if int(A[j][1:2])<int(A[j-1][1:2]):
v = A[j]
A[j] = A[j-1]
A[j-1] = v
return A
def SelectionSort(A,n):
for i in range(n):
minj = i
for j in range(i,n):
if int(A[j][1:2])<int(A[minj][1:2]):
minj = j
v = A[i]
A[i] = A[minj]
A[minj] = v
return A
print(' '.join(BubbleSort(A,n)))
print('Stable')
print(' '.join(SelectionSort(B,n)))
if BubbleSort(A,n) == SelectionSort(B,n):
print('Stable')
else:
print('Not stable')
``` | output | 1 | 19,392 | 19 | 38,785 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,393 | 19 | 38,786 |
"Correct Solution:
```
import copy
def BubbleSort(C, N):
for i in range(N):
for j in range(N - 1, i, -1):
if int(C[j][1]) < int(C[j - 1][1]):
C[j], C[j - 1] = C[j - 1], C[j]
return C
def SelectionSort(C, N):
for i in range(N):
minj = i
for j in range(i, N):
if int(C[j][1]) < int(C[minj][1]):
minj = j
C[i], C[minj] = C[minj], C[i]
return C
n = int(input())
c = input().split()
b = BubbleSort(copy.deepcopy(c), n)
print(" ".join(b))
print("Stable")
s = SelectionSort(copy.deepcopy(c), n)
print(" ".join(s))
if b == s:
print("Stable")
else:
print("Not stable")
``` | output | 1 | 19,393 | 19 | 38,787 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,394 | 19 | 38,788 |
"Correct Solution:
```
def select(S):
for i in range(0, n):
minj = i
for j in range(i, n):
if int(S[j][1]) < int(S[minj][1]):
minj = j
(S[i], S[minj]) = (S[minj], S[i])
return S
def bubble(B):
flag = True
while flag:
flag = False
for j in reversed(range(1, n)):
if int(B[j][1]) < int(B[j-1][1]):
(B[j-1], B[j]) = (B[j], B[j-1])
flag = True
return B
n = int(input())
A = input().split(' ')
B = bubble(A[:])
print(" ".join(B[:]))
print("Stable")
S = select(A)
print(" ".join(S))
print("Stable" if " ".join(B) == " ".join(S) else "Not stable")
``` | output | 1 | 19,394 | 19 | 38,789 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,395 | 19 | 38,790 |
"Correct Solution:
```
class Card:
def __init__(self, inf):
self.num = int(inf[1])
self.inf = inf
n, card = int(input()), [Card(i) for i in input().split()]
card1 = card[:]
for i in range(n-1):
for j in range(n-1, i, -1):
if card[j].num < card[j-1].num:
card[j], card[j-1] = card[j-1], card[j]
print(" ".join([i.inf for i in card]))
print("Stable")
for i in range(n-1):
for j in range(i+1, n):
if j == i+1:
idx = j
elif card1[idx].num > card1[j].num:
idx = j
if card1[i].num > card1[idx].num:
card1[i], card1[idx] = card1[idx], card1[i]
print(" ".join([i.inf for i in card1]))
if card == card1:
print("Stable")
else:
print("Not stable")
``` | output | 1 | 19,395 | 19 | 38,791 |
Provide a correct Python 3 solution for this coding contest problem.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable | instruction | 0 | 19,396 | 19 | 38,792 |
"Correct Solution:
```
N = int(input())
C = input().split()
_C = C.copy()
for i in range(N):
for j in range(N-1, i, -1):
if (C[j][1] < C[j-1][1]):
C[j], C[j-1] = C[j-1], C[j]
print(*C)
print("Stable")
for i in range(N):
m = i
for j in range(i, N):
if (_C[j][1] < _C[m][1]):
m = j
_C[i], _C[m] = _C[m], _C[i]
print(*_C)
if(C ==_C):
print("Stable")
else:
print("Not stable")
``` | output | 1 | 19,396 | 19 | 38,793 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
import copy
N = int(input())
A = list(input().split())
C = []
C = copy.deepcopy(A)
for i in range(N):
for j in range(N-1,i,-1):
if int(C[j][1:]) < int(C[j-1][1:]):
temp = C[j]
C[j] = C[j-1]
C[j-1] = temp
for i in range(N-1):
minj = i
for j in range(i+1,N):
if int(A[j][1:]) < int(A[minj][1:]):
minj = j
temp = A[i]
A[i] = A[minj]
A[minj] = temp
print(*C)
print("Stable")
print(*A)
if A == C:
print("Stable")
else:
print("Not stable")
``` | instruction | 0 | 19,397 | 19 | 38,794 |
Yes | output | 1 | 19,397 | 19 | 38,795 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
def bubble_sort(a, n):
for i in range(n-1, 0, -1):
j = i
while (j < n) and (a[j][1] < a[j-1][1]):
tmp = a[j-1]
a[j-1] = a[j]
a[j] = tmp
j += 1
return a
def selection_sort(a, n):
for i in range(n):
minj = i
for j in range(i, n):
if a[j][1] < a[minj][1]:
minj = j
if i != minj:
a[minj], a[i] = a[i], a[minj]
return a
n = int(input())
input1 = input().split()
a = list(input1)
b = a[:]
a = bubble_sort(a, n)
b = selection_sort(b, n)
#*ใใคใใใใจใงใฟใใซ๏ผใฎไธญใซๅ
ฅใใๅ๏ผใจใใฆๅฎ่กใๅฏ่ฝใซใชใใใฟใใซใฏใชใใธใงใฏใใฎๅคๆดใใงใใชใ
print(*a)
print("Stable")
print(*b)
if a == b:
print("Stable")
else:
print("Not stable")
#a = b[:]ใจใฏไฝใ๏ผใชในใใฎindexใจobjectใใพใใพใณใใผ
#print(*aใจใฏ) ใฟใใซใจใใฆๅบๅ
``` | instruction | 0 | 19,398 | 19 | 38,796 |
Yes | output | 1 | 19,398 | 19 | 38,797 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
# -*- coding:utf8 -*-
import copy
n = int(input())
l1 = list(map(str, input().split()))
l2 = copy.deepcopy(l1)
flag = 1
while flag:
flag = 0
for i in reversed(range(1, n)):
if l1[i][-1] < l1[i - 1][-1]:
l1[i], l1[i - 1] = l1[i - 1], l1[i]
flag = 1
print(' '.join(map(str, l1)))
print('Stable')
for i in range(n):
minj = i + l2[i:].index(min(l2[i:], key = lambda x : x[-1]))
if minj != i:
l2[i], l2[minj] = l2[minj], l2[i]
print(' '.join(map(str, l2)))
print('Stable' if l1 == l2 else 'Not stable')
``` | instruction | 0 | 19,399 | 19 | 38,798 |
Yes | output | 1 | 19,399 | 19 | 38,799 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
def bubbleSort(C1,N):
for i in range(N):
for j in range(N-1,i,-1):
if C1[j][1] < C1[j-1][1]:
C1[j],C1[j-1] = C1[j-1],C1[j]
return C1[:]
def selectSort(C2,N):
for i in range(0,N):
minj = i
for j in range(i,N):
if C2[minj][1] > C2[j][1]:
minj = j
C2[i],C2[minj] = C2[minj],C2[i]
return C2[:]
N = int(input())
C1 = input().split()
C2 = C1[:]
C1 = bubbleSort(C1,N)
C2 = selectSort(C2,N)
print(*C1)
print("Stable")
print(*C2)
if C1 == C2:
print("Stable")
else:
print("Not stable")
``` | instruction | 0 | 19,400 | 19 | 38,800 |
Yes | output | 1 | 19,400 | 19 | 38,801 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
def bubble_sort(cards):
list_length = len(cards)
for i in range(list_length):
for j in range(list_length-1,i,-1):
if int(cards[j][1:]) < int(cards[j-1][1:]):
cards[j],cards[j-1] = cards[j-1],cards[j]
return cards
def selection_sort(cards):
list_length = len(cards)
for i in range(list_length):
min_element = i
for j in range(i+1,list_length):
if int(cards[j][1:]) < int(cards[min_element][1:]):
min_element = j
cards[i],cards[min_element] = cards[min_element],cards[i]
return cards
n = int(input())
cards = input().split()
bubble_cards = [i for i in bubble_sort(cards)]
selection_cards = [i for i in selection_sort(cards)]
print(' '.join(bubble_cards))
print('Stable')
print(' '.join(selection_cards))
if bubble_cards == selection_cards:
print('Stable')
else:
print('Not stable')
``` | instruction | 0 | 19,401 | 19 | 38,802 |
No | output | 1 | 19,401 | 19 | 38,803 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
def bubble_sort(a, n):
for i in range(0,n):
for j in range(n-1,i-1,-1):
if a[j][1] < a[j-1][1]:
a[j], a[j-1] = a[j-1], a[j]
return a
def selection_sort(b, n):
for i in range(0,n):
minj = i
for j in range(i, n):
if b[j][1] < b[minj][1]:
minj = j
b[i], b[minj] = b[minj], b[i]
return b
if __name__ == '__main__':
n = int(input())
a = list(map(str, input().split()))
b = a[:]
buble = bubble_sort(a,n)
select = selection_sort(b,n)
print(" ".join(map(str, buble)))
print("Stable")
print(" ".join(map(str, select)))
if select == buble:
print("Stable")
else:
print("Not stable")
``` | instruction | 0 | 19,402 | 19 | 38,804 |
No | output | 1 | 19,402 | 19 | 38,805 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
#ใใใซใฝใผใ
def BubbleSort(C,N):
flag = 1
while flag:
flag = 0
for j in range(N-1,0,-1):
if int(C[j][1:2]) < int(C[j-1][1:2]):
tmp = C[j]
C[j] = C[j-1]
C[j-1] = tmp
flag = 1
print(' '.join(C))
#้ธๆใฝใผใ
def SelectionSort(C,N):
for i in range(0,N,1):
minj = i
for j in range(i,N,1):
if int(C[j][1:2]) < int(C[minj][1:2]):
minj = j
tmp = C[i]
C[i] = C[minj]
C[minj] = tmp
print(' '.join(C))
#ๅฎๅฎใใฉใใใฎๅคๅฎ
def isStable(inp, out,N):
for i in range(0,N):
for j in range(i+1,N):
for a in range(0,N):
for b in range(a+1,N):
# print("inp(i,j):",inp[i],inp[j],"out(b,a):",out[b],out[a]+"\n")
if int(inp[i][1]) == int(inp[j][1]) and inp[i] == out[b] and inp[j] == out[a]:
print('Not stable')
return
print('Stable')
ๆ็ดใซ่ชฟในใใใฟใผใณ
N = int(input())
A = list(input().split())
Bubble_A = A.copy()
Selection_A = A.copy()
BubbleSort(Bubble_A,N)
isStable(A,Bubble_A,N)
SelectionSort(Selection_A,N)
isStable(A,Selection_A,N)
``` | instruction | 0 | 19,403 | 19 | 38,806 |
No | output | 1 | 19,403 | 19 | 38,807 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's arrange a deck of cards. There are totally 36 cards of 4 suits(S, H, C, D) and 9 values (1, 2, ... 9). For example, 'eight of heart' is represented by H8 and 'one of diamonds' is represented by D1.
Your task is to write a program which sorts a given set of cards in ascending order by their values using the Bubble Sort algorithms and the Selection Sort algorithm respectively. These algorithms should be based on the following pseudocode:
BubbleSort(C)
1 for i = 0 to C.length-1
2 for j = C.length-1 downto i+1
3 if C[j].value < C[j-1].value
4 swap C[j] and C[j-1]
SelectionSort(C)
1 for i = 0 to C.length-1
2 mini = i
3 for j = i to C.length-1
4 if C[j].value < C[mini].value
5 mini = j
6 swap C[i] and C[mini]
Note that, indices for array elements are based on 0-origin.
For each algorithm, report the stability of the output for the given input (instance). Here, 'stability of the output' means that: cards with the same value appear in the output in the same order as they do in the input (instance).
Constraints
1 โค N โค 36
Input
The first line contains an integer N, the number of cards.
N cards are given in the following line. Each card is represented by two characters. Two consecutive cards are separated by a space character.
Output
In the first line, print the arranged cards provided by the Bubble Sort algorithm. Two consecutive cards should be separated by a space character.
In the second line, print the stability ("Stable" or "Not stable") of this output.
In the third line, print the arranged cards provided by the Selection Sort algorithm. Two consecutive cards should be separated by a space character.
In the fourth line, print the stability ("Stable" or "Not stable") of this output.
Examples
Input
5
H4 C9 S4 D2 C3
Output
D2 C3 H4 S4 C9
Stable
D2 C3 S4 H4 C9
Not stable
Input
2
S1 H1
Output
S1 H1
Stable
S1 H1
Stable
Submitted Solution:
```
def BubbleSort(C,N):
count = 0
for i in range(N):
j = N-1
while True:
if j == 0:
break
a,b = list(C[j]),list(C[j-1])
if a[1] < b[1]:
tmp = C[j-1]
C[j-1] = C[j]
C[j] = tmp
count += 1
j -= 1
return C,count
def SelectionSort(D,N):
count = 0
for i in range(N):
minj = i
for j in range(i,N):
a,b = list(D[j]),list(D[minj])
if a[1] < b[1]:
minj = j
count += 1
tmp = D[i]
D[i] = D[minj]
D[minj] = tmp
return D,count
n = int(input())
d = input().split()
d2 = list(d)
d,c = BubbleSort(d,n)
for i in range(len(d)-1):
print(d[i],end = ' ')
print(d[-1])
print('Stable')
d2,c_s = SelectionSort(d2,n)
for i in range(len(d2)-1):
print(d2[i],end = ' ')
print(d2[-1])
if c_s == c:
print('Stable')
else:
print('Not stable')
``` | instruction | 0 | 19,404 | 19 | 38,808 |
No | output | 1 | 19,404 | 19 | 38,809 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Mateusz likes to travel! However, on his 42nd visit to Saint Computersburg there is not much left to sightsee. That's why he decided to go to an escape room with his friends!
The team has solved all riddles flawlessly. There is only one riddle remaining โ a huge circular table! There are n weighing scales lying on top of the table, distributed along the circle. Each scale is adjacent to exactly two other scales: for each i โ \{1, 2, ..., n-1\}, the i-th and the (i+1)-th scales are adjacent to each other, as well as the first and the n-th scale.
The i-th scale initially contains a_i heavy coins. Mateusz can perform moves โ each move consists of fetching a single coin from one scale and putting it on any adjacent scale.
It turns out that the riddle will be solved when there is a specific amount of coins on each of the scales. Specifically, each scale has parameters l_i and r_i. If each coin lies on a single scale and for each i, the i-th scale contains at least l_i and at most r_i coins, the riddle will be solved and Mateusz's team will win!
Mateusz is aiming for the best possible time. Therefore, he wants to solved the riddle as quickly as possible. What is the minimum possible number of moves required to fulfill all the conditions?
Input
The first line contains an integer n (3 โค n โค 35 000) โ the number of weighing scales in the circle.
The following n lines describe the scales. The i-th of these lines describes the i-th scale and consists of three integers a_i, l_i, r_i (0 โค a_i โค 35 000, 0 โค l_i โค r_i โค 35 000).
It's guaranteed that the riddle is solvable, that is, โ_{i=1}^n l_i โค โ_{i=1}^n a_i โค โ_{i=1}^n r_i.
Output
Output one integer โ the minimum number of operations required to solve the riddle.
Examples
Input
5
0 2 3
1 2 3
4 3 3
4 3 3
4 3 3
Output
4
Input
3
0 1 2
3 0 3
1 0 0
Output
1
Input
4
1 0 2
3 3 3
4 0 4
5 3 5
Output
0
Submitted Solution:
```
global l
l = []
def get_index(i,lenght_of_list):
if i == lenght_of_list - 1 :
return lenght_of_list - 2, 0
elif i == 0:
return - 1, 1
else:
return i-1,i+1
def check_val(i):
if l[i][1] <= l[i][0] <= l[i][2]:
return 0
elif l[i][0] > l[i][2]:
return 1
else:
return -1
def sol():
conv = lambda x : eval(x)
try:
num = int(input())
for _ in range(0,num):
i = input().strip().split(' ')
l.append(list(map(conv,i)))
except:
return 0
result = []
length = num
c = 0
count = 0
while c != 150:
for i in range(0,length):
bef, aft = get_index(i,length)
check_valB = check_val(bef)
check_valC = check_val(i)
check_valA = check_val(aft)
if check_valC == 0:
pass
elif check_valC < 0:
if check_valA > 0:
l[i][0] +=1
l[aft][0] -= 1
elif check_valB > 0:
l[i][0] +=1
l[bef][0] -= 1
elif check_valA <= 0 and check_valB <= 0 :
if l[aft][0] != 0:
l[i][0] += 1
l[aft][0] -= 1
elif l[bef][0] != 0:
l[i][0] += 1
l[bef][0] -=1
count +=1
elif check_valC > 0:
if check_valA < 0:
l[i][0] -=1
l[aft][0] += 1
elif check_valB < 0:
l[i][0] -=1
l[bef][0] += 1
elif check_valA >= 0 and check_valB >= 0 :
if l[i][0] != 0:
l[i][0] -= 1
l[aft][0] +=1
count += 1
c += 1
return l
print(sol())
``` | instruction | 0 | 19,538 | 19 | 39,076 |
No | output | 1 | 19,538 | 19 | 39,077 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Mateusz likes to travel! However, on his 42nd visit to Saint Computersburg there is not much left to sightsee. That's why he decided to go to an escape room with his friends!
The team has solved all riddles flawlessly. There is only one riddle remaining โ a huge circular table! There are n weighing scales lying on top of the table, distributed along the circle. Each scale is adjacent to exactly two other scales: for each i โ \{1, 2, ..., n-1\}, the i-th and the (i+1)-th scales are adjacent to each other, as well as the first and the n-th scale.
The i-th scale initially contains a_i heavy coins. Mateusz can perform moves โ each move consists of fetching a single coin from one scale and putting it on any adjacent scale.
It turns out that the riddle will be solved when there is a specific amount of coins on each of the scales. Specifically, each scale has parameters l_i and r_i. If each coin lies on a single scale and for each i, the i-th scale contains at least l_i and at most r_i coins, the riddle will be solved and Mateusz's team will win!
Mateusz is aiming for the best possible time. Therefore, he wants to solved the riddle as quickly as possible. What is the minimum possible number of moves required to fulfill all the conditions?
Input
The first line contains an integer n (3 โค n โค 35 000) โ the number of weighing scales in the circle.
The following n lines describe the scales. The i-th of these lines describes the i-th scale and consists of three integers a_i, l_i, r_i (0 โค a_i โค 35 000, 0 โค l_i โค r_i โค 35 000).
It's guaranteed that the riddle is solvable, that is, โ_{i=1}^n l_i โค โ_{i=1}^n a_i โค โ_{i=1}^n r_i.
Output
Output one integer โ the minimum number of operations required to solve the riddle.
Examples
Input
5
0 2 3
1 2 3
4 3 3
4 3 3
4 3 3
Output
4
Input
3
0 1 2
3 0 3
1 0 0
Output
1
Input
4
1 0 2
3 3 3
4 0 4
5 3 5
Output
0
Submitted Solution:
```
global l
l = []
def get_index(i,lenght_of_list):
if i == lenght_of_list - 1 :
return lenght_of_list - 2, 0
elif i == 0:
return - 1, 1
else:
return i-1,i+1
def check_val(i):
if l[i][1] <= l[i][0] <= l[i][2]:
return 0
elif l[i][0] > l[i][2]:
return 1
else:
return -1
def sol():
conv = lambda x : eval(x)
try:
num = int(input())
for _ in range(0,num):
i = input().strip().split(' ')
l.append(list(map(conv,i)))
except:
return 0
result = []
length = num
c = 0
count = 0
while c != 10:
for i in range(0,length):
bef, aft = get_index(i,length)
check_valB = check_val(bef)
check_valC = check_val(i)
check_valA = check_val(aft)
if check_valC == 0:
pass
elif check_valC < 0:
if check_valA > 0:
l[i][0] +=1
l[aft][0] -= 1
elif check_valB > 0:
l[i][0] +=1
l[bef][0] -= 1
elif check_valA <= 0 and check_valB <= 0 :
if l[aft][0] != 0:
l[i][0] += 1
l[aft][0] -= 1
elif l[bef][0] != 0:
l[i][0] += 1
l[bef][0] -=1
count +=1
elif check_valC > 0:
if check_valA < 0:
l[i][0] -=1
l[aft][0] += 1
elif check_valB < 0:
l[i][0] -=1
l[bef][0] += 1
elif check_valA >= 0 and check_valB >= 0 :
if l[i][0] != 0:
l[i][0] -= 1
l[aft][0] +=1
count += 1
c += 1
return count
print(sol())
``` | instruction | 0 | 19,539 | 19 | 39,078 |
No | output | 1 | 19,539 | 19 | 39,079 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Mateusz likes to travel! However, on his 42nd visit to Saint Computersburg there is not much left to sightsee. That's why he decided to go to an escape room with his friends!
The team has solved all riddles flawlessly. There is only one riddle remaining โ a huge circular table! There are n weighing scales lying on top of the table, distributed along the circle. Each scale is adjacent to exactly two other scales: for each i โ \{1, 2, ..., n-1\}, the i-th and the (i+1)-th scales are adjacent to each other, as well as the first and the n-th scale.
The i-th scale initially contains a_i heavy coins. Mateusz can perform moves โ each move consists of fetching a single coin from one scale and putting it on any adjacent scale.
It turns out that the riddle will be solved when there is a specific amount of coins on each of the scales. Specifically, each scale has parameters l_i and r_i. If each coin lies on a single scale and for each i, the i-th scale contains at least l_i and at most r_i coins, the riddle will be solved and Mateusz's team will win!
Mateusz is aiming for the best possible time. Therefore, he wants to solved the riddle as quickly as possible. What is the minimum possible number of moves required to fulfill all the conditions?
Input
The first line contains an integer n (3 โค n โค 35 000) โ the number of weighing scales in the circle.
The following n lines describe the scales. The i-th of these lines describes the i-th scale and consists of three integers a_i, l_i, r_i (0 โค a_i โค 35 000, 0 โค l_i โค r_i โค 35 000).
It's guaranteed that the riddle is solvable, that is, โ_{i=1}^n l_i โค โ_{i=1}^n a_i โค โ_{i=1}^n r_i.
Output
Output one integer โ the minimum number of operations required to solve the riddle.
Examples
Input
5
0 2 3
1 2 3
4 3 3
4 3 3
4 3 3
Output
4
Input
3
0 1 2
3 0 3
1 0 0
Output
1
Input
4
1 0 2
3 3 3
4 0 4
5 3 5
Output
0
Submitted Solution:
```
global l
l = []
def get_index(i,lenght_of_list):
if i == lenght_of_list - 1 :
return lenght_of_list - 2, 0
elif i == 0:
return - 1, 1
else:
return i-1,i+1
def check_val(i):
if l[i][1] <= l[i][0] <= l[i][2]:
return 0
elif l[i][0] > l[i][2]:
return 1
else:
return -1
def sol():
conv = lambda x : eval(x)
try:
num = int(input())
for _ in range(0,num):
i = input().strip().split(' ')
l.append(list(map(conv,i)))
except:
return 0
result = []
length = num
c = 0
count = 0
while c != 100:
for i in range(0,length):
bef, aft = get_index(i,length)
check_valB = check_val(bef)
check_valC = check_val(i)
check_valA = check_val(aft)
if check_valC == 0:
pass
elif check_valC < 0:
if check_valA > 0:
l[i][0] +=1
l[aft][0] -= 1
elif check_valB > 0:
l[i][0] +=1
l[bef][0] -= 1
elif check_valA <= 0 and check_valB <= 0 :
if l[aft][0] != 0:
l[i][0] += 1
l[aft][0] -= 1
elif l[bef][0] != 0:
l[i][0] += 1
l[bef][0] -=1
count +=1
elif check_valC > 0:
if check_valA < 0:
l[i][0] -=1
l[aft][0] += 1
elif check_valB < 0:
l[i][0] -=1
l[bef][0] += 1
elif check_valA >= 0 and check_valB >= 0 :
if l[i][0] != 0:
l[i][0] -= 1
l[aft][0] +=1
count += 1
c += 1
return count
print(sol())
``` | instruction | 0 | 19,540 | 19 | 39,080 |
No | output | 1 | 19,540 | 19 | 39,081 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Mateusz likes to travel! However, on his 42nd visit to Saint Computersburg there is not much left to sightsee. That's why he decided to go to an escape room with his friends!
The team has solved all riddles flawlessly. There is only one riddle remaining โ a huge circular table! There are n weighing scales lying on top of the table, distributed along the circle. Each scale is adjacent to exactly two other scales: for each i โ \{1, 2, ..., n-1\}, the i-th and the (i+1)-th scales are adjacent to each other, as well as the first and the n-th scale.
The i-th scale initially contains a_i heavy coins. Mateusz can perform moves โ each move consists of fetching a single coin from one scale and putting it on any adjacent scale.
It turns out that the riddle will be solved when there is a specific amount of coins on each of the scales. Specifically, each scale has parameters l_i and r_i. If each coin lies on a single scale and for each i, the i-th scale contains at least l_i and at most r_i coins, the riddle will be solved and Mateusz's team will win!
Mateusz is aiming for the best possible time. Therefore, he wants to solved the riddle as quickly as possible. What is the minimum possible number of moves required to fulfill all the conditions?
Input
The first line contains an integer n (3 โค n โค 35 000) โ the number of weighing scales in the circle.
The following n lines describe the scales. The i-th of these lines describes the i-th scale and consists of three integers a_i, l_i, r_i (0 โค a_i โค 35 000, 0 โค l_i โค r_i โค 35 000).
It's guaranteed that the riddle is solvable, that is, โ_{i=1}^n l_i โค โ_{i=1}^n a_i โค โ_{i=1}^n r_i.
Output
Output one integer โ the minimum number of operations required to solve the riddle.
Examples
Input
5
0 2 3
1 2 3
4 3 3
4 3 3
4 3 3
Output
4
Input
3
0 1 2
3 0 3
1 0 0
Output
1
Input
4
1 0 2
3 3 3
4 0 4
5 3 5
Output
0
Submitted Solution:
```
import time
def sol():
l = []
conv = lambda x : eval(x)
try:
num = int(input())
for _ in range(0,num):
i = input().strip().split(' ')
l.append(list(map(conv,i)))
except:
return 0
result = []
for i in range(0,len(l)):
if l[i][1] <= l[i][0] <= l[i][2]:
result.append(0)
pass
elif l[i][0] > l[i][2]:
result.append(l[i][0] - l[i][2])
else:
result.append(l[i][0] - l[i][1])
result.sort()
def remz(result):
while 0 in result:
result.remove(0)
remz(result)
c = 0
start = time.time()
PERIOD_OF_TIME = 4
while len(result) != 0:
if time.time() > start + PERIOD_OF_TIME : break
if (result[0] < 0 and result[-1] > 0):
ngt = result[0]
pst = result[-1]
if abs(ngt) > abs(pst):
result[0] += pst
result[-1] += (-pst)
else:
result[0] += (-ngt)
result[-1] += ngt
remz(result)
c += 1
return c
print(sol())
``` | instruction | 0 | 19,541 | 19 | 39,082 |
No | output | 1 | 19,541 | 19 | 39,083 |
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