message stringlengths 2 433k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 113 108k | cluster float64 12 12 | __index_level_0__ int64 226 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then removes them and places a single integer in their... | instruction | 0 | 100,563 | 12 | 201,126 |
Tags: bitmasks, brute force, dp, greedy
Correct Solution:
```
t = int(input())
for _ in range(t):
input()
l = list(map(int, input().split()))
v = []
for x in l:
if not v: v.append(x)
else: v.append(x ^ v[-1])
if v[-1] == 0:
print("YES")
else:
ok = False
fo... | output | 1 | 100,563 | 12 | 201,127 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then removes them and places a single integer in their... | instruction | 0 | 100,564 | 12 | 201,128 |
Tags: bitmasks, brute force, dp, greedy
Correct Solution:
```
t = int(input())
for _ in range(t):
n = int(input())
a = list(map(int, input().split()))
x = 0
for v in a:
x ^= v
if x == 0:
print("YES")
else:
y = a[0]
si = 0
while y != x:
si +=... | output | 1 | 100,564 | 12 | 201,129 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then removes them and places a single integer in their... | instruction | 0 | 100,565 | 12 | 201,130 |
Tags: bitmasks, brute force, dp, greedy
Correct Solution:
```
#!/usr/bin/env python
from __future__ import division, print_function
import math
import os
import sys
from fractions import *
from sys import *
from decimal import *
from io import BytesIO, IOBase
from itertools import *
from collections import *
# sys.set... | output | 1 | 100,565 | 12 | 201,131 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,566 | 12 | 201,132 |
Yes | output | 1 | 100,566 | 12 | 201,133 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,567 | 12 | 201,134 |
Yes | output | 1 | 100,567 | 12 | 201,135 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,568 | 12 | 201,136 |
Yes | output | 1 | 100,568 | 12 | 201,137 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,569 | 12 | 201,138 |
Yes | output | 1 | 100,569 | 12 | 201,139 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,570 | 12 | 201,140 |
No | output | 1 | 100,570 | 12 | 201,141 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,571 | 12 | 201,142 |
No | output | 1 | 100,571 | 12 | 201,143 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,572 | 12 | 201,144 |
No | output | 1 | 100,572 | 12 | 201,145 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Baby Ehab is known for his love for a certain operation. He has an array a of length n, and he decided to keep doing the following operation on it:
* he picks 2 adjacent elements; he then re... | instruction | 0 | 100,573 | 12 | 201,146 |
No | output | 1 | 100,573 | 12 | 201,147 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,652 | 12 | 201,304 |
Tags: greedy, implementation, sortings
Correct Solution:
```
n=int(input())
l=[int(i) for i in input().split()]
if n==1:
print(1)
print(l[0])
else:
ans=sorted(list(set(l)))
#l=sorted(l,reverse=True)
d=dict()
for i in l:
if i in d:
d[i]+=1
else:
d[i]=1
... | output | 1 | 100,652 | 12 | 201,305 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,653 | 12 | 201,306 |
Tags: greedy, implementation, sortings
Correct Solution:
```
m = int(input())
a = map(int, input().split())
def seryozha_and_ladder(a):
a = sorted(a, key = lambda x: -x)
prev_i = a[0]
cnt = 2
first_part = [a[0]]
second_part = []
for i in a:
if i == prev_i:
cnt += 1
if cnt == 2:
second_part.append(i)
... | output | 1 | 100,653 | 12 | 201,307 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,654 | 12 | 201,308 |
Tags: greedy, implementation, sortings
Correct Solution:
```
def heapSort(li):
def downHeap(li, k, n):
new_elem = li[k]
while 2*k+1 < n:
child = 2*k+1;
if child+1 < n and li[child] < li[child+1]:
child += 1
if new_elem >= li[child]:
... | output | 1 | 100,654 | 12 | 201,309 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,655 | 12 | 201,310 |
Tags: greedy, implementation, sortings
Correct Solution:
```
n = int(input())
test = list(map(int, input().split()))
test1 = []
result = []
test.sort(reverse=True)
num = test.count(test[0])
test1.append(test[0])
mark = 0
for i in range(num, len(test)):
if test[i] != test1[len(test1)-1]:
test1.append(test... | output | 1 | 100,655 | 12 | 201,311 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,656 | 12 | 201,312 |
Tags: greedy, implementation, sortings
Correct Solution:
```
n = int(input())
d = {}
l = list(map(int,input().split()))
for i in range(n):
if l[i] in d:
d[l[i]] = d[l[i]] + 1
else:
d[l[i]] = 1
k = list(set(l))
m = sorted(k)
k.sort(reverse=True)
l = []
for i in k:
if i == k[0]:
continue
elif d[i] > 1:
l.appe... | output | 1 | 100,656 | 12 | 201,313 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,657 | 12 | 201,314 |
Tags: greedy, implementation, sortings
Correct Solution:
```
input()
list = [0] * 5001
for i in map(int, input().split()):
list[i] += 1
a = [i for i in range(len(list)) if list[i]]
b = [i for i in a[:-1] if list[i] > 1]
print(len(a) + len(b))
print(' '.join(map(str, a + b[::-1])))
``` | output | 1 | 100,657 | 12 | 201,315 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,658 | 12 | 201,316 |
Tags: greedy, implementation, sortings
Correct Solution:
```
m = int(input())
ml = list(map(int,input().split()))
ml.sort()
sl = [ml[0]]
if len(ml)>1:
fl = [ml[1]]
for i in range(2,m):
if sl[len(sl)-1]<ml[i]:
sl.append(ml[i])
elif fl[len(fl)-1]<ml[i]:
fl.append(ml[i])
... | output | 1 | 100,658 | 12 | 201,317 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sereja loves integer sequences very much. He especially likes stairs.
Sequence a1, a2, ..., a|a| (|a| is the length of the sequence) is stairs if there is such index i (1 ≤ i ≤ |a|), that the following condition is met:
a1 < a2 < ... < ai... | instruction | 0 | 100,659 | 12 | 201,318 |
Tags: greedy, implementation, sortings
Correct Solution:
```
N = int(input())
arr = list(map(int, input().split()))
arr.sort()
left = [0]
right = []
flag = 0
local = 0
for i in range (0, len(arr)):
if local < arr[i]:
local = arr[i]
flag = 1
right.append(arr[i])
elif flag == 1:
le... | output | 1 | 100,659 | 12 | 201,319 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have written on a piece of paper an array of n positive integers a[1], a[2], ..., a[n] and m good pairs of integers (i1, j1), (i2, j2), ..., (im, jm). Each good pair (ik, jk) meets the following conditions: ik + jk is an odd number and 1... | instruction | 0 | 100,713 | 12 | 201,426 |
Tags: flows, graph matchings, number theory
Correct Solution:
```
# by the authority of GOD author: manhar singh sachdev #
import os,sys
from io import BytesIO,IOBase
def matching(n,m,path):
match1 = [-1]*n
match2 = [-1]*m
for node in range(n):
for nei in path[node]:
if match2[nei]... | output | 1 | 100,713 | 12 | 201,427 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You have written on a piece of paper an array of n positive integers a[1], a[2], ..., a[n] and m good pairs of integers (i1, j1), (i2, j2), ..., (im, jm). Each good pair (ik, jk) meets the following conditions: ik + jk is an odd number and 1... | instruction | 0 | 100,714 | 12 | 201,428 |
Tags: flows, graph matchings, number theory
Correct Solution:
```
def g(i):
u[i] = 0
for j in p[i]:
if v[j] < 0 or u[v[j]] and g(v[j]):
v[j] = i
return 1
return 0
f = lambda: map(int, input().split())
n, m = f()
s = k = 0
d = [[]]
for i in f():
j = 2
t = []
while... | output | 1 | 100,714 | 12 | 201,429 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have written on a piece of paper an array of n positive integers a[1], a[2], ..., a[n] and m good pairs of integers (i1, j1), (i2, j2), ..., (im, jm). Each good pair (ik, jk) meets the follo... | instruction | 0 | 100,716 | 12 | 201,432 |
No | output | 1 | 100,716 | 12 | 201,433 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You have written on a piece of paper an array of n positive integers a[1], a[2], ..., a[n] and m good pairs of integers (i1, j1), (i2, j2), ..., (im, jm). Each good pair (ik, jk) meets the follo... | instruction | 0 | 100,718 | 12 | 201,436 |
No | output | 1 | 100,718 | 12 | 201,437 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,854 | 12 | 201,708 |
Tags: greedy
Correct Solution:
```
n, k = map(int, input().split(' '))
arr = list(map(int, input().split(' ')))
if k > 2:
print(sorted(arr)[-1])
elif k == 2:
if arr[0] > arr[-1]:
print(arr[0])
else:
print(arr[-1])
elif k == 1:
print(sorted(arr)[0])
``` | output | 1 | 100,854 | 12 | 201,709 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,855 | 12 | 201,710 |
Tags: greedy
Correct Solution:
```
n,k=map(int,input().split())
a=list(map(int,input().split()))
if k==1:
print(min(a)) #vibora net - minimum
elif k==2:
if a[0]>=a[n-1]:
print(a[0])
else: # mojno videlit krainiy
print(a[n-1])
elif k%2==1:
print(max(a)) # mojno videlit max ... | output | 1 | 100,855 | 12 | 201,711 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,856 | 12 | 201,712 |
Tags: greedy
Correct Solution:
```
nums = input().split()
nums = [int(x) for x in nums]
other_nums = input().split()
other_nums = [int(x) for x in other_nums]
if nums[1] == 1:
print(min(other_nums))
elif nums[1] == 2:
first = other_nums[0]
last = other_nums[-1]
if first < last:
print(last... | output | 1 | 100,856 | 12 | 201,713 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,857 | 12 | 201,714 |
Tags: greedy
Correct Solution:
```
first_line = input().split(" ")
array_size = int(first_line[0])
subsegments = int(first_line[1])
# print(subsegments)
array = input().split(" ")
desired_array = [int(numeric_string) for numeric_string in array]
int_array = [int(numeric_string) for numeric_string in array]
desired_arra... | output | 1 | 100,857 | 12 | 201,715 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,858 | 12 | 201,716 |
Tags: greedy
Correct Solution:
```
n, k = map(int, input().split())
a = list(map(int, input().split()))
mx = a.index(max(a))
nk = n - k
RL = []
if mx - nk < 0:
st = 0
else:
st = mx - nk
if mx + nk > n - 1:
en = n - 1
else:
en = mx + nk
if k == 1:
print(min(a))
elif k == 2:
print(max(a[0], a[n - ... | output | 1 | 100,858 | 12 | 201,717 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,859 | 12 | 201,718 |
Tags: greedy
Correct Solution:
```
n,k=map(int,input().split())
l=list(map(int,input().split()))
M=max(l)
m=min(l)
if k==1:
print(m)
elif k>=3:
print(M)
else:
if l.index(M)==0 or l.index(M)==len(l)-1:
print(M)
else :
if l.index(m)==0:
print(l[len(l)-1])
elif l.index(m... | output | 1 | 100,859 | 12 | 201,719 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,860 | 12 | 201,720 |
Tags: greedy
Correct Solution:
```
n , m = map(int , input().split())
li = list(map(int , input().split()))
if m == 1 :
print(min(li))
elif m == 2 :
print(max(li[0], li[-1]))
else:
print(max(li))
``` | output | 1 | 100,860 | 12 | 201,721 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on each subsegment, and take the maximum integer ove... | instruction | 0 | 100,861 | 12 | 201,722 |
Tags: greedy
Correct Solution:
```
a, c = map(int,input().split())
N = list(map(int,input().split()))
if c == 2:
print(max(N[-1],N[0]))
elif c > 1:
print(max(N))
else:
print(min(N))
``` | output | 1 | 100,861 | 12 | 201,723 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,862 | 12 | 201,724 |
Yes | output | 1 | 100,862 | 12 | 201,725 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,863 | 12 | 201,726 |
Yes | output | 1 | 100,863 | 12 | 201,727 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,864 | 12 | 201,728 |
Yes | output | 1 | 100,864 | 12 | 201,729 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,865 | 12 | 201,730 |
Yes | output | 1 | 100,865 | 12 | 201,731 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,866 | 12 | 201,732 |
No | output | 1 | 100,866 | 12 | 201,733 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,867 | 12 | 201,734 |
No | output | 1 | 100,867 | 12 | 201,735 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,868 | 12 | 201,736 |
No | output | 1 | 100,868 | 12 | 201,737 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a1, a2, ..., an consisting of n integers, and an integer k. You have to split the array into exactly k non-empty subsegments. You'll then compute the minimum integer on ea... | instruction | 0 | 100,869 | 12 | 201,738 |
No | output | 1 | 100,869 | 12 | 201,739 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Nikita likes tasks on order statistics, for example, he can easily find the k-th number in increasing order on a segment of an array. But now Nikita wonders how many segments of an array there are such that a given number x is the k-th numbe... | instruction | 0 | 100,918 | 12 | 201,836 |
Tags: chinese remainder theorem, fft, math
Correct Solution:
```
from math import pi
from cmath import exp
def fft(a, lgN, rot=1): # rot=-1 for ifft
N = 1<<lgN
assert len(a)==N
rev = [0]*N
for i in range(N):
rev[i] = (rev[i>>1]>>1)+(i&1)*(N>>1)
A = [a[rev[i]] for i in range(N)]
h = 1
while h<N:
w_... | output | 1 | 100,918 | 12 | 201,837 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Nikita likes tasks on order statistics, for example, he can easily find the k-th number in increasing order on a segment of an array. But now Nikita wonders how many segments of an array there a... | instruction | 0 | 100,919 | 12 | 201,838 |
No | output | 1 | 100,919 | 12 | 201,839 |
Provide a correct Python 3 solution for this coding contest problem.
A permutation of N numbers from 1 to N A1, A2, ……, AN is given. You can perform the operation reverse (i, j) to reverse the order of the numbers in the interval [i, j] (1 ≤ i ≤ j ≤ N) for this permutation. For example, if reverse (2, 4) is applied to... | instruction | 0 | 101,144 | 12 | 202,288 |
"Correct Solution:
```
import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,random,time,copy,functools
sys.setrecursionlimit(10**7)
inf = 10**20
eps = 1.0 / 10**13
mod = 10**9+7
dd = [(-1,0),(0,1),(1,0),(0,-1)]
ddn = [(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]
def LI(): return [int... | output | 1 | 101,144 | 12 | 202,289 |
Provide a correct Python 3 solution for this coding contest problem.
A permutation of N numbers from 1 to N A1, A2, ……, AN is given. You can perform the operation reverse (i, j) to reverse the order of the numbers in the interval [i, j] (1 ≤ i ≤ j ≤ N) for this permutation. For example, if reverse (2, 4) is applied to... | instruction | 0 | 101,145 | 12 | 202,290 |
"Correct Solution:
```
from functools import lru_cache
import sys
from collections import deque
sys.setrecursionlimit(1000000)
sorted_a = ""
m = dict({})
N = int(input())
A = ''.join(list(map(lambda x: str(int(x)-1), input().split())))
sorted_a = ''.join(list(sorted(A)))
q = deque()
q.append((A, 0))
m[A] = 0
while ... | output | 1 | 101,145 | 12 | 202,291 |
Provide a correct Python 3 solution for this coding contest problem.
A permutation of N numbers from 1 to N A1, A2, ……, AN is given. You can perform the operation reverse (i, j) to reverse the order of the numbers in the interval [i, j] (1 ≤ i ≤ j ≤ N) for this permutation. For example, if reverse (2, 4) is applied to... | instruction | 0 | 101,146 | 12 | 202,292 |
"Correct Solution:
```
from heapq import heappush, heappop
import sys
readline = sys.stdin.readline
write = sys.stdout.write
def solve():
N = int(readline())
INF = 10**9
A = tuple(map(int, readline().split()))
B = tuple(range(1, N+1))
def check(N, A, N1):
que = [(0, A)]
dist = {A: 0}... | output | 1 | 101,146 | 12 | 202,293 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
A permutation of N numbers from 1 to N A1, A2, ……, AN is given. You can perform the operation reverse (i, j) to reverse the order of the numbers in the interval [i, j] (1 ≤ i ≤ j ≤ N) for this p... | instruction | 0 | 101,147 | 12 | 202,294 |
No | output | 1 | 101,147 | 12 | 202,295 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Toad Zitz has an array of integers, each integer is between 0 and m-1 inclusive. The integers are a_1, a_2, …, a_n.
In one operation Zitz can choose an integer k and k indices i_1, i_2, …, i_k such that 1 ≤ i_1 < i_2 < … < i_k ≤ n. He shoul... | instruction | 0 | 101,254 | 12 | 202,508 |
Tags: binary search, greedy
Correct Solution:
```
import sys
import math
from itertools import permutations
input = sys.stdin.readline
n,m=map(int,input().split())
def binarySearch (arr, l, r):
if r >= l:
mid = l + (r - l)//2
#print(mid,check(arr,mid),l,r)
if l==r:
return mid
elif check(arr,mid):
... | output | 1 | 101,254 | 12 | 202,509 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Toad Zitz has an array of integers, each integer is between 0 and m-1 inclusive. The integers are a_1, a_2, …, a_n.
In one operation Zitz can choose an integer k and k indices i_1, i_2, …, i_k such that 1 ≤ i_1 < i_2 < … < i_k ≤ n. He shoul... | instruction | 0 | 101,255 | 12 | 202,510 |
Tags: binary search, greedy
Correct Solution:
```
import sys
import math as mt
input=sys.stdin.buffer.readline
t=1
def check(x1):
prev=0
#print(x1,m)
for i in range(n):
#print(111,prev,i,arr[i],)
if arr[i]>prev:
x=m-(arr[i]-prev)
if x>x1:
prev=arr[i]... | output | 1 | 101,255 | 12 | 202,511 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Toad Zitz has an array of integers, each integer is between 0 and m-1 inclusive. The integers are a_1, a_2, …, a_n.
In one operation Zitz can choose an integer k and k indices i_1, i_2, …, i_k such that 1 ≤ i_1 < i_2 < … < i_k ≤ n. He shoul... | instruction | 0 | 101,256 | 12 | 202,512 |
Tags: binary search, greedy
Correct Solution:
```
import sys
N, M = map(int, input().split(' '))
A = list(map(int, sys.stdin.readline().split(' ')))
def check() :
last = 0
for i in range(N) :
if A[i] < last :
if last - A[i] > m :
break
elif A[i] > last :
... | output | 1 | 101,256 | 12 | 202,513 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Toad Zitz has an array of integers, each integer is between 0 and m-1 inclusive. The integers are a_1, a_2, …, a_n.
In one operation Zitz can choose an integer k and k indices i_1, i_2, …, i_k such that 1 ≤ i_1 < i_2 < … < i_k ≤ n. He shoul... | instruction | 0 | 101,257 | 12 | 202,514 |
Tags: binary search, greedy
Correct Solution:
```
n,m=map(int,input().split())
a=tuple(map(int,input().split()))
l,r=-1,m-1
while(l+1<r):
M=(l+r)//2
ai1=0
for ai in a:
if (m-ai+ai1)%m>M:
if ai<ai1:
l=M
break
ai1=ai
else:
r=M
print(r... | output | 1 | 101,257 | 12 | 202,515 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Toad Zitz has an array of integers, each integer is between 0 and m-1 inclusive. The integers are a_1, a_2, …, a_n.
In one operation Zitz can choose an integer k and k indices i_1, i_2, …, i_k such that 1 ≤ i_1 < i_2 < … < i_k ≤ n. He shoul... | instruction | 0 | 101,258 | 12 | 202,516 |
Tags: binary search, greedy
Correct Solution:
```
import sys,math
def read_int():
return int(sys.stdin.readline().strip())
def read_int_list():
return list(map(int,sys.stdin.readline().strip().split()))
def read_string():
return sys.stdin.readline().strip()
def read_string_list(delim=" "):
return sys.stdin.read... | output | 1 | 101,258 | 12 | 202,517 |
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