message stringlengths 2 44.5k | message_type stringclasses 2 values | message_id int64 0 1 | conversation_id int64 42 109k | cluster float64 5 5 | __index_level_0__ int64 84 217k |
|---|---|---|---|---|---|
Provide a correct Python 3 solution for this coding contest problem.
Example
Input
7
>>
Output
7 | instruction | 0 | 2,431 | 5 | 4,862 |
"Correct Solution:
```
n=int(input())
s=input()
print(n-min(s.find('>'),n-s.rfind('<')-1))
``` | output | 1 | 2,431 | 5 | 4,863 |
Provide a correct Python 3 solution for this coding contest problem.
There are $ n $ acitivities with start times $ \\ {s_i \\} $ and finish times $ \\ {t_i \\} $. Assuming that a person can only work on a single activity at a time, find the maximum number of activities that can be performed by a single person.
Constraints
* $ 1 \ le n \ le 10 ^ 5 $
* $ 1 \ le s_i \ lt t_i \ le 10 ^ 9 (1 \ le i \ le n) $
Input
$ n $
$ s_1 $ $ t_1 $
$ s_2 $ $ t_2 $
::
$ s_n $ $ t_n $
The first line consists of the integer $ n $. In the following $ n $ lines, the start time $ s_i $ and the finish time $ t_i $ of the activity $ i $ are given.
output
Print the maximum number of activities in a line.
Examples
Input
5
1 2
3 9
3 5
5 9
6 8
Output
3
Input
3
1 5
3 4
2 5
Output
1
Input
3
1 2
2 3
3 4
Output
2 | instruction | 0 | 2,437 | 5 | 4,874 |
"Correct Solution:
```
n = (int)(input())
list=[]
for i in range(n):
k = input().split(" ")
a=(int)(k[0])
b=(int)(k[1])
list.append([a,b])
list = sorted(list,key=lambda x: x[1])
count=0
time=0
for i in range(n):
if(time<list[i][0]):
count+=1
time=list[i][1]
print(count)
``` | output | 1 | 2,437 | 5 | 4,875 |
Provide a correct Python 3 solution for this coding contest problem.
There are $ n $ acitivities with start times $ \\ {s_i \\} $ and finish times $ \\ {t_i \\} $. Assuming that a person can only work on a single activity at a time, find the maximum number of activities that can be performed by a single person.
Constraints
* $ 1 \ le n \ le 10 ^ 5 $
* $ 1 \ le s_i \ lt t_i \ le 10 ^ 9 (1 \ le i \ le n) $
Input
$ n $
$ s_1 $ $ t_1 $
$ s_2 $ $ t_2 $
::
$ s_n $ $ t_n $
The first line consists of the integer $ n $. In the following $ n $ lines, the start time $ s_i $ and the finish time $ t_i $ of the activity $ i $ are given.
output
Print the maximum number of activities in a line.
Examples
Input
5
1 2
3 9
3 5
5 9
6 8
Output
3
Input
3
1 5
3 4
2 5
Output
1
Input
3
1 2
2 3
3 4
Output
2 | instruction | 0 | 2,441 | 5 | 4,882 |
"Correct Solution:
```
def act(st):
st.sort(key = lambda x:x[0])
OP = [st[0]]
for i in range(1,len(st)):
if OP[len(OP)-1][1] < st[i][0]:
OP.append(st[i])
elif OP[len(OP)-1][1] <= st[i][1]:
pass
else:
OP.pop()
OP.append(st[i])
return len(OP)
def main():
n = int(input())
st = [tuple(map(int,input().split())) for _ in range(n)]
ans = act(st)
print(ans)
if __name__ == "__main__":
main()
``` | output | 1 | 2,441 | 5 | 4,883 |
Provide a correct Python 3 solution for this coding contest problem.
There are $ n $ acitivities with start times $ \\ {s_i \\} $ and finish times $ \\ {t_i \\} $. Assuming that a person can only work on a single activity at a time, find the maximum number of activities that can be performed by a single person.
Constraints
* $ 1 \ le n \ le 10 ^ 5 $
* $ 1 \ le s_i \ lt t_i \ le 10 ^ 9 (1 \ le i \ le n) $
Input
$ n $
$ s_1 $ $ t_1 $
$ s_2 $ $ t_2 $
::
$ s_n $ $ t_n $
The first line consists of the integer $ n $. In the following $ n $ lines, the start time $ s_i $ and the finish time $ t_i $ of the activity $ i $ are given.
output
Print the maximum number of activities in a line.
Examples
Input
5
1 2
3 9
3 5
5 9
6 8
Output
3
Input
3
1 5
3 4
2 5
Output
1
Input
3
1 2
2 3
3 4
Output
2 | instruction | 0 | 2,442 | 5 | 4,884 |
"Correct Solution:
```
n = int(input())
A = []
for i in range(n):
s, t = [int(x) for x in input().split()]
A.append((s, t))
A.sort(key=lambda x: x[1])
ans = 0
t = -1
for a in A:
if a[0] > t:
ans += 1
t = a[1]
print(ans)
``` | output | 1 | 2,442 | 5 | 4,885 |
Provide a correct Python 3 solution for this coding contest problem.
There are $ n $ acitivities with start times $ \\ {s_i \\} $ and finish times $ \\ {t_i \\} $. Assuming that a person can only work on a single activity at a time, find the maximum number of activities that can be performed by a single person.
Constraints
* $ 1 \ le n \ le 10 ^ 5 $
* $ 1 \ le s_i \ lt t_i \ le 10 ^ 9 (1 \ le i \ le n) $
Input
$ n $
$ s_1 $ $ t_1 $
$ s_2 $ $ t_2 $
::
$ s_n $ $ t_n $
The first line consists of the integer $ n $. In the following $ n $ lines, the start time $ s_i $ and the finish time $ t_i $ of the activity $ i $ are given.
output
Print the maximum number of activities in a line.
Examples
Input
5
1 2
3 9
3 5
5 9
6 8
Output
3
Input
3
1 5
3 4
2 5
Output
1
Input
3
1 2
2 3
3 4
Output
2 | instruction | 0 | 2,443 | 5 | 4,886 |
"Correct Solution:
```
n = int(input())
t_s = []
for i in range(n):
a , b = map(int, input().split())
t_s += [(b, a)]
t_s.sort()
Sum = 1
i = 1
t_now = t_s[0][0]
while i <= n-1:
for a in t_s[i:]:
i = i + 1
if t_now < a[1]:
Sum += 1
t_now = a[0]
print(Sum)
``` | output | 1 | 2,443 | 5 | 4,887 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,451 | 5 | 4,902 |
"Correct Solution:
```
while True:
a=input()
if a.find('?')>0:break
t=a.split()
if t[1]=='/':print(int(t[0])//int(t[2]))
else:print(eval(''.join(t)))
``` | output | 1 | 2,451 | 5 | 4,903 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,452 | 5 | 4,904 |
"Correct Solution:
```
while True:
i = input()
if "?" in i:
break
print(int(eval(i)))
``` | output | 1 | 2,452 | 5 | 4,905 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,453 | 5 | 4,906 |
"Correct Solution:
```
while True:
s=input()
if "?" in s:
break
print(int(eval(s)))
``` | output | 1 | 2,453 | 5 | 4,907 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,454 | 5 | 4,908 |
"Correct Solution:
```
while(True):
a,op,b=input().split()
if op == '?':
break
print(int(eval(a+op+b)))
``` | output | 1 | 2,454 | 5 | 4,909 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,455 | 5 | 4,910 |
"Correct Solution:
```
import re
while True:
s = input()
if (re.match(r'.+\s\?\s.+', s)):
break
print(int(eval(s)))
``` | output | 1 | 2,455 | 5 | 4,911 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,456 | 5 | 4,912 |
"Correct Solution:
```
ops = {'+': lambda a, b: a+b, '-': lambda a, b: a-b, '*': lambda a, b: a*b, '/': lambda a, b: int(a/b)}
while True:
a, op, b = input().split()
if op not in ops.keys():
break
print(ops[op](int(a),int(b)))
``` | output | 1 | 2,456 | 5 | 4,913 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,457 | 5 | 4,914 |
"Correct Solution:
```
while 1:
a=input()
if '?' in a:break
print(int(eval(a)))
``` | output | 1 | 2,457 | 5 | 4,915 |
Provide a correct Python 3 solution for this coding contest problem.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108 | instruction | 0 | 2,458 | 5 | 4,916 |
"Correct Solution:
```
while True:
a,op,b = map(str,input().split())
if op == "?":
exit ()
else:
if op == "/":
print (int(a)//int(b))
else:
print (eval(a+op+b))
``` | output | 1 | 2,458 | 5 | 4,917 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
while True:
a, op, b = input().split()
a = int(a)
b = int(b)
if op == '+': print(a + b)
elif op == '-': print(a - b)
elif op == '*': print(a * b)
elif op == '/': print(a // b)
else: break
``` | instruction | 0 | 2,459 | 5 | 4,918 |
Yes | output | 1 | 2,459 | 5 | 4,919 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
import sys
for line in sys.stdin:
if line.find("?") != -1:
break
print(int(eval(line)))
``` | instruction | 0 | 2,460 | 5 | 4,920 |
Yes | output | 1 | 2,460 | 5 | 4,921 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
while True:
a, op, b = input().split()
a = int(a)
b = int(b)
if op == '+': print(a + b)
elif op == '-': print(a - b)
elif op == '/': print(a // b)
elif op == '*': print(a * b)
else: break
``` | instruction | 0 | 2,461 | 5 | 4,922 |
Yes | output | 1 | 2,461 | 5 | 4,923 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
a,op,b=input().split()
while op != "?":
a,b=int(a),int(b)
if op=="+":
print(a+b)
elif op=="-":
print(a-b)
elif op=="*":
print(a*b)
else :
print(a//b)
a,op,b=input().split()
``` | instruction | 0 | 2,462 | 5 | 4,924 |
Yes | output | 1 | 2,462 | 5 | 4,925 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
for i in range(6):
a,op,b = map(str,input().split())
if op == "+":
s = int(a)+int(b)
print(s)
elif op == "-":
sa = int(a)-int(b)
print(sa)
elif op == "*":
seki = int(a)*int(b)
print(seki)
elif op == "/":
syou=round(int(a)/int(b))
print(syou)
else:
break
``` | instruction | 0 | 2,463 | 5 | 4,926 |
No | output | 1 | 2,463 | 5 | 4,927 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
if __name__ == "__main__":
co = []
while True:
a, op, b = input().split()
if op == '?':
break
co.append([int(a),op,int(b)])
for i in co:
if i[1] == '+':
print(i[0]+i[2])
elif i[2] == '-':
print(i[0]-i[2])
elif i[2] == '/':
print(i[0]/i[2])
else:
print(i[0]*i[2])
``` | instruction | 0 | 2,464 | 5 | 4,928 |
No | output | 1 | 2,464 | 5 | 4,929 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
import sys
while True:
x = sys.stdin.readline().strip()
if "?" in x:
break
else:
a = list(x.split())
x = int(a[0])
y = int(a[2])
if a[1] == "+":
print(x + y)
elif a[1] == "-":
print(x - y)
elif a[1] == "*":
print(x * y)
elif a[1] == "/":
print(x / y)
``` | instruction | 0 | 2,465 | 5 | 4,930 |
No | output | 1 | 2,465 | 5 | 4,931 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.
The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
Constraints
* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.
Input
The input consists of multiple datasets. Each dataset is given in the following format.
a op b
The input ends with a dataset where op = '?'. Your program should not process for this dataset.
Output
For each dataset, print the value in a line.
Example
Input
1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0
Output
3
38
26
10
108
Submitted Solution:
```
while True:
a,op,b=input().split()
a=int(a)
b=int(b)
op=str(op
if op=("+"):
print(a+b)
elif op=("-"):
print(a-b)
elif op=("*"):
print(a*b)
elif op=("/"):
print(a/b)
elif op=("?"):
break
~
``` | instruction | 0 | 2,466 | 5 | 4,932 |
No | output | 1 | 2,466 | 5 | 4,933 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's write all the positive integer numbers one after another from 1 without any delimiters (i.e. as a single string). It will be the infinite sequence starting with 123456789101112131415161718192021222324252627282930313233343536...
Your task is to print the k-th digit of this sequence.
Input
The first and only line contains integer k (1 ≤ k ≤ 10000) — the position to process (1-based index).
Output
Print the k-th digit of the resulting infinite sequence.
Examples
Input
7
Output
7
Input
21
Output
5
Submitted Solution:
```
k = int(input())
x = []
i=0
flag = True
while flag==True:
x.append(9*(10**i))
i = i+1
if sum(x) >= k : flag = False
p = len(x)
base = sum(x) - x[p-1]
r = k - base
d = -((-r)//p)
dd = r%p
if dd==0: dd=p
number = str(base + d)
digit = number[dd-1]
# print(number)
print(digit)
``` | instruction | 0 | 2,538 | 5 | 5,076 |
No | output | 1 | 2,538 | 5 | 5,077 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
This is the easy version of the problem. The only difference is that in this version k = 0.
There is an array a_1, a_2, …, a_n of n positive integers. You should divide it into a minimal number of continuous segments, such that in each segment there are no two numbers (on different positions), whose product is a perfect square.
Moreover, it is allowed to do at most k such operations before the division: choose a number in the array and change its value to any positive integer. But in this version k = 0, so it is not important.
What is the minimum number of continuous segments you should use if you will make changes optimally?
Input
The first line contains a single integer t (1 ≤ t ≤ 1000) — the number of test cases.
The first line of each test case contains two integers n, k (1 ≤ n ≤ 2 ⋅ 10^5, k = 0).
The second line of each test case contains n integers a_1, a_2, …, a_n (1 ≤ a_i ≤ 10^7).
It's guaranteed that the sum of n over all test cases does not exceed 2 ⋅ 10^5.
Output
For each test case print a single integer — the answer to the problem.
Example
Input
3
5 0
18 6 2 4 1
5 0
6 8 1 24 8
1 0
1
Output
3
2
1
Note
In the first test case the division may be as follows:
* [18, 6]
* [2, 4]
* [1]
Submitted Solution:
```
import sys
import math
from collections import defaultdict,Counter,deque
# input=sys.stdin.readline
# def print(x):
# sys.stdout.write(str(x)+"\n")
import os
import sys
from io import BytesIO, IOBase
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)
input = lambda: sys.stdin.readline().rstrip("\r\n")
# sys.stdout=open("CP2/output.txt",'w')
# sys.stdin=open("CP2/input.txt",'r')
# mod=pow(10,9)+7
t=int(input())
for i in range(t):
n,k=map(int,input().split())
a=list(map(int,input().split()))
cur=set()
ans=1
for j in a:
s=[]
c=0
while j%2==0:
j//=2
c+=1
c%=2
if c:
s.append(2)
c=0
for k in range(3,int(math.sqrt(j))+1,2):
while j%k==0:
c+=1
j//=k
c%=2
if c:
s.append(k)
c=0
if j>2:
s.append(j)
s=tuple(s)
if s in cur:
ans+=1
cur=set()
cur.add(s)
print(ans)
``` | instruction | 0 | 2,664 | 5 | 5,328 |
Yes | output | 1 | 2,664 | 5 | 5,329 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n integers a1, a2, ..., an.
A sequence of integers x1, x2, ..., xk is called a "xor-sequence" if for every 1 ≤ i ≤ k - 1 the number of ones in the binary representation of the number xi <image> xi + 1's is a multiple of 3 and <image> for all 1 ≤ i ≤ k. The symbol <image> is used for the binary exclusive or operation.
How many "xor-sequences" of length k exist? Output the answer modulo 109 + 7.
Note if a = [1, 1] and k = 1 then the answer is 2, because you should consider the ones from a as different.
Input
The first line contains two integers n and k (1 ≤ n ≤ 100, 1 ≤ k ≤ 1018) — the number of given integers and the length of the "xor-sequences".
The second line contains n integers ai (0 ≤ ai ≤ 1018).
Output
Print the only integer c — the number of "xor-sequences" of length k modulo 109 + 7.
Examples
Input
5 2
15 1 2 4 8
Output
13
Input
5 1
15 1 2 4 8
Output
5
Submitted Solution:
```
from itertools import combinations
n , k =map(int,input().split())
l = list(map(int,input().split()))
sol = 0
if k==1:
print(n)
exit(0)
for comb in combinations(l,k):
#print(comb)
sol+=1
for j in range(len(comb)-1):
#print("str(seq[j]^seq[j+1]) ",str(bin(comb[j]^comb[j+1])))
if str(bin(comb[j]^comb[j+1])).count("1") % 3 == 0:
sol+=1
print(sol-1)
``` | instruction | 0 | 2,952 | 5 | 5,904 |
No | output | 1 | 2,952 | 5 | 5,905 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n integers a1, a2, ..., an.
A sequence of integers x1, x2, ..., xk is called a "xor-sequence" if for every 1 ≤ i ≤ k - 1 the number of ones in the binary representation of the number xi <image> xi + 1's is a multiple of 3 and <image> for all 1 ≤ i ≤ k. The symbol <image> is used for the binary exclusive or operation.
How many "xor-sequences" of length k exist? Output the answer modulo 109 + 7.
Note if a = [1, 1] and k = 1 then the answer is 2, because you should consider the ones from a as different.
Input
The first line contains two integers n and k (1 ≤ n ≤ 100, 1 ≤ k ≤ 1018) — the number of given integers and the length of the "xor-sequences".
The second line contains n integers ai (0 ≤ ai ≤ 1018).
Output
Print the only integer c — the number of "xor-sequences" of length k modulo 109 + 7.
Examples
Input
5 2
15 1 2 4 8
Output
13
Input
5 1
15 1 2 4 8
Output
5
Submitted Solution:
```
from itertools import combinations
n , k =map(int,input().split())
l = list(map(int,input().split()))
sol = 0
if k==1:
print(n)
exit(0)
for comb in combinations(l,k):
print(comb)
sol+=1
for j in range(len(comb)-1):
print("str(seq[j]^seq[j+1]) ",str(bin(comb[j]^comb[j+1])))
if str(bin(comb[j]^comb[j+1])).count("1") % 3 == 0:
sol+=1
print(sol-1)
``` | instruction | 0 | 2,953 | 5 | 5,906 |
No | output | 1 | 2,953 | 5 | 5,907 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n integers a1, a2, ..., an.
A sequence of integers x1, x2, ..., xk is called a "xor-sequence" if for every 1 ≤ i ≤ k - 1 the number of ones in the binary representation of the number xi <image> xi + 1's is a multiple of 3 and <image> for all 1 ≤ i ≤ k. The symbol <image> is used for the binary exclusive or operation.
How many "xor-sequences" of length k exist? Output the answer modulo 109 + 7.
Note if a = [1, 1] and k = 1 then the answer is 2, because you should consider the ones from a as different.
Input
The first line contains two integers n and k (1 ≤ n ≤ 100, 1 ≤ k ≤ 1018) — the number of given integers and the length of the "xor-sequences".
The second line contains n integers ai (0 ≤ ai ≤ 1018).
Output
Print the only integer c — the number of "xor-sequences" of length k modulo 109 + 7.
Examples
Input
5 2
15 1 2 4 8
Output
13
Input
5 1
15 1 2 4 8
Output
5
Submitted Solution:
```
n, k = map(int, input().split())
a = list(map(int, input().split()))
a = list(set(a))
n = len(a)
q = [[0 for i in range(n)] for j in range(n)]
for i in range(n):
for j in range(n):
if divmod(bin(a[i] ^ a[j]).count("1"), 3)[1] == 0:
q[i][j] = 1
res = [[0 for i in range(n)] for j in range(n)]
tmp = [[0 for i in range(n)] for j in range(n)]
for i in range(n):
res[i][i] = 1
k -= 1
while k > 0:
if k % 2 == 1:
for i in range(n):
for j in range(n):
tmp[i][j] = 0
for i in range(n):
for j in range(n):
for z in range(n):
tmp[i][j] = divmod(tmp[i][j] + res[i][z] * q[z][j], 1000000007)[1]
for i in range(n):
for j in range(n):
res[i][j] = tmp[i][j]
for i in range(n):
for j in range(n):
tmp[i][j] = 0
for i in range(n):
for j in range(n):
for z in range(n):
tmp[i][j] = divmod(tmp[i][j] + q[i][z] * q[z][j], 1000000007)[1]
for i in range(n):
for j in range(n):
q[i][j] = tmp[i][j]
k = divmod(k, 2)[0]
ans = 0
for i in range(n):
for j in range(n):
ans += res[i][j]
print(divmod(ans, 1000000007)[1])
``` | instruction | 0 | 2,954 | 5 | 5,908 |
No | output | 1 | 2,954 | 5 | 5,909 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given n integers a1, a2, ..., an.
A sequence of integers x1, x2, ..., xk is called a "xor-sequence" if for every 1 ≤ i ≤ k - 1 the number of ones in the binary representation of the number xi <image> xi + 1's is a multiple of 3 and <image> for all 1 ≤ i ≤ k. The symbol <image> is used for the binary exclusive or operation.
How many "xor-sequences" of length k exist? Output the answer modulo 109 + 7.
Note if a = [1, 1] and k = 1 then the answer is 2, because you should consider the ones from a as different.
Input
The first line contains two integers n and k (1 ≤ n ≤ 100, 1 ≤ k ≤ 1018) — the number of given integers and the length of the "xor-sequences".
The second line contains n integers ai (0 ≤ ai ≤ 1018).
Output
Print the only integer c — the number of "xor-sequences" of length k modulo 109 + 7.
Examples
Input
5 2
15 1 2 4 8
Output
13
Input
5 1
15 1 2 4 8
Output
5
Submitted Solution:
```
MOD = (10**9) + 7
def mulmat(A, B):
n = len(A)
C = [[0 for i in range(n)] for j in range(n)]
for i in range(n):
for j in range(n):
for k in range(n):
C[i][j] += A[i][k] * B[k][j]
C[i][j] %= MOD
return C
n, k = [int(x) for x in input().split()]
L = [int(x) for x in input().split()]
adjm = [[0 for i in range(n)] for j in range(n)]
for i in range(n):
adjm[i][i] = 1
for j in range(n):
a = L[i]
b = L[j]
c = a^b
cnt = 0
while c:
cnt += 1
c = c ^ (c & -c)
if cnt%3 == 0:
adjm[i][j] = 1
k -= 1
I = [[1 if i==j else 0 for i in range(n)] for j in range(n)]
while k:
if k&1:
I = mulmat(I, adjm)
k >>= 1
adjm = mulmat(adjm, adjm)
print(sum([sum(x) for x in I]))
``` | instruction | 0 | 2,955 | 5 | 5,910 |
No | output | 1 | 2,955 | 5 | 5,911 |
Provide tags and a correct Python 3 solution for this coding contest problem.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4 | instruction | 0 | 2,990 | 5 | 5,980 |
Tags: *special, implementation
Correct Solution:
```
input()
arr = list(map(int, input().split()))
print(max(arr) ^ arr[-1])
``` | output | 1 | 2,990 | 5 | 5,981 |
Provide tags and a correct Python 3 solution for this coding contest problem.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4 | instruction | 0 | 2,992 | 5 | 5,984 |
Tags: *special, implementation
Correct Solution:
```
n = int(input())
#n, m = map(int, input().split())
#s = input()
c = list(map(int, input().split()))
print(max(c) ^ c[-1])
``` | output | 1 | 2,992 | 5 | 5,985 |
Provide tags and a correct Python 3 solution for this coding contest problem.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4 | instruction | 0 | 2,994 | 5 | 5,988 |
Tags: *special, implementation
Correct Solution:
```
N = int( input() )
A = list( map( int, input().split() ) )
print( max( A ) ^ A[ N - 1 ] )
``` | output | 1 | 2,994 | 5 | 5,989 |
Provide tags and a correct Python 3 solution for this coding contest problem.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4 | instruction | 0 | 2,995 | 5 | 5,990 |
Tags: *special, implementation
Correct Solution:
```
input()
a = list(map(int, input().split()))
print(max(a) ^ a[-1])
``` | output | 1 | 2,995 | 5 | 5,991 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
#!/usr/bin/env python3
def main():
try:
while True:
input()
a = list(map(int, input().split()))
print(max(a) ^ a[-1])
except EOFError:
pass
main()
``` | instruction | 0 | 2,996 | 5 | 5,992 |
Yes | output | 1 | 2,996 | 5 | 5,993 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
n = int(input())
a = list(map(int,input().split()))[:n]
print(max(a) ^ a[-1])
``` | instruction | 0 | 2,997 | 5 | 5,994 |
Yes | output | 1 | 2,997 | 5 | 5,995 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
n=int(input())
L=[int(_) for _ in input().split()]
print(L[n-1]^max(L))
``` | instruction | 0 | 2,998 | 5 | 5,996 |
Yes | output | 1 | 2,998 | 5 | 5,997 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
_ = int(input())
a = [int(i) for i in input().split()]
print(max(a) ^ a[-1])
``` | instruction | 0 | 2,999 | 5 | 5,998 |
Yes | output | 1 | 2,999 | 5 | 5,999 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
n = int(input())
if (n==3): print(27);
else: print(2)
``` | instruction | 0 | 3,000 | 5 | 6,000 |
No | output | 1 | 3,000 | 5 | 6,001 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
input()
a=list(map(int, input().split()))
for x in range(0, 100):
if x not in a:
print(x)
exit()
``` | instruction | 0 | 3,001 | 5 | 6,002 |
No | output | 1 | 3,001 | 5 | 6,003 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
import sys
n = int(input())
a = [int(x) for x in input().split()]
for i in range(1, n + 2):
if i not in a:
print(i)
sys.exit(0)
``` | instruction | 0 | 3,002 | 5 | 6,004 |
No | output | 1 | 3,002 | 5 | 6,005 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
DO YOU EXPECT ME TO FIND THIS OUT?
WHAT BASE AND/XOR LANGUAGE INCLUDES string?
DON'T BYTE OF MORE THAN YOU CAN CHEW
YOU CAN ONLY DISTORT THE LARGEST OF MATHEMATICS SO FAR
SAYING "ABRACADABRA" WITHOUT A MAGIC AND WON'T DO YOU ANY GOOD
THE LAST STACK RUPTURES. ALL DIE. OH, THE EMBARRASSMENT!
I HAVE NO ARRAY AND I MUST SCREAM
ELEMENTS MAY NOT BE STORED IN WEST HYPERSPACE
Input
The first line of input data contains a single integer n (1 ≤ n ≤ 10).
The second line of input data contains n space-separated integers ai (1 ≤ ai ≤ 11).
Output
Output a single integer.
Example
Input
4
2 5 3 1
Output
4
Submitted Solution:
```
a=int(input())
s=list(map(int,input().split()))
d=min(s)
f=max(s)
for i in range(1,len(s)):
if s.count(d+i)!=1:
print(d+i)
break
``` | instruction | 0 | 3,003 | 5 | 6,006 |
No | output | 1 | 3,003 | 5 | 6,007 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
a = input()
b = input()
a = list(map(int, a.split()))
b = list(map(int, b.split()))
n=a[0]
k=a[1]
b.sort()
if k==0:
if b[0]!=1:
res = 1
else:
res = -1
elif k==len(b):
res = b[-1]
elif b[k-1]==b[k]:
res = -1
else:
res = b[k-1]
print(res)
``` | instruction | 0 | 3,069 | 5 | 6,138 |
Yes | output | 1 | 3,069 | 5 | 6,139 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
n,k=map(int,input().split())
a=list(map(int,input().split()))
a.sort()
if(k==0):
if(a[0]>=2):
print(a[0]-1)
else:
print(-1)
elif(n==k):
print(a[-1])
else:
if(a[k-1]==a[k]):
print("-1")
else:
print(a[k-1])
``` | instruction | 0 | 3,070 | 5 | 6,140 |
Yes | output | 1 | 3,070 | 5 | 6,141 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
n, k = (int(x) for x in input().split())
s = list(map(int, input().split()))
ss = sorted(s)
if k == 0:
print(-1 if ss[0] == 1 else 1)
exit()
if k == n:
print(ss[-1])
exit()
if ss[k-1] != ss[k]:
print(ss[k-1])
else:
print(-1)
``` | instruction | 0 | 3,071 | 5 | 6,142 |
Yes | output | 1 | 3,071 | 5 | 6,143 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
a = input().split(" ")
n, k = int(a[0]), int(a[1])
l1 = input().split(" ")
l2 = []
for item in l1:
l2.append(int(item))
l2.sort()
# print(f"n == {n}, k == {k}")
# print(l2)
if k == n or k == 0:
print(-1)
exit()
if l2[k-1] != l2[k]:
print(l2[k-1]+1)
else:
print(-1)
``` | instruction | 0 | 3,072 | 5 | 6,144 |
No | output | 1 | 3,072 | 5 | 6,145 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
def check(k,j):
list1=[]
for x in j:
list1.append(int(x))
list1.sort()
a=list1[k-1]
if a==list1[k]:
return -1
else:
return a
i=input().split()
n=int(i[0])
k=int(i[1])
j=input().split()
print(check(k,j))
``` | instruction | 0 | 3,073 | 5 | 6,146 |
No | output | 1 | 3,073 | 5 | 6,147 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
n, k = map(int, input().split())
nbs = sorted(list(map(int, input().split())))
if k == n:
print(nbs[n])
else:
if nbs[k-1] < nbs[k]:
print(nbs[k-1])
else:
print(-1)
``` | instruction | 0 | 3,074 | 5 | 6,148 |
No | output | 1 | 3,074 | 5 | 6,149 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a sequence of integers of length n and integer number k. You should print any integer number x in the range of [1; 10^9] (i.e. 1 ≤ x ≤ 10^9) such that exactly k elements of given sequence are less than or equal to x.
Note that the sequence can contain equal elements.
If there is no such x, print "-1" (without quotes).
Input
The first line of the input contains integer numbers n and k (1 ≤ n ≤ 2 ⋅ 10^5, 0 ≤ k ≤ n). The second line of the input contains n integer numbers a_1, a_2, ..., a_n (1 ≤ a_i ≤ 10^9) — the sequence itself.
Output
Print any integer number x from range [1; 10^9] such that exactly k elements of given sequence is less or equal to x.
If there is no such x, print "-1" (without quotes).
Examples
Input
7 4
3 7 5 1 10 3 20
Output
6
Input
7 2
3 7 5 1 10 3 20
Output
-1
Note
In the first example 5 is also a valid answer because the elements with indices [1, 3, 4, 6] is less than or equal to 5 and obviously less than or equal to 6.
In the second example you cannot choose any number that only 2 elements of the given sequence will be less than or equal to this number because 3 elements of the given sequence will be also less than or equal to this number.
Submitted Solution:
```
f = input().split(" ")
n = int(f[0])
k = int(f[1])
a = input().split(" ")
for i in range(0, n):
a[i] = int(a[i])
a_updated = sorted(a)
if n <= k:
print(a_updated[-1]+1)
else:
if k != 0 and len(a_updated) > 1:
if a_updated[k-1] == a_updated[k]:
print(-1)
else:
print(a_updated[k-1])
elif k != 0 and len(a_updated) == 1:
if a_updated[0] != 1:
print(a_updated[0])
else:
print(-1)
elif k == 0:
if a_updated[0] != 1:
print(a_updated[0]-1)
else:
print(-1)
else:
print(a_updated[k-1])
``` | instruction | 0 | 3,075 | 5 | 6,150 |
No | output | 1 | 3,075 | 5 | 6,151 |
Provide a correct Python 3 solution for this coding contest problem.
There is an integer sequence A of length N whose values are unknown.
Given is an integer sequence B of length N-1 which is known to satisfy the following:
B_i \geq \max(A_i, A_{i+1})
Find the maximum possible sum of the elements of A.
Constraints
* All values in input are integers.
* 2 \leq N \leq 100
* 0 \leq B_i \leq 10^5
Input
Input is given from Standard Input in the following format:
N
B_1 B_2 ... B_{N-1}
Output
Print the maximum possible sum of the elements of A.
Examples
Input
3
2 5
Output
9
Input
2
3
Output
6
Input
6
0 153 10 10 23
Output
53 | instruction | 0 | 3,118 | 5 | 6,236 |
"Correct Solution:
```
n = int(input())
b = [int(i) for i in input().split()]
a = [min(b[i], b[i + 1]) for i in range(n - 2)]
print(sum(a) + b[0] + b[-1])
``` | output | 1 | 3,118 | 5 | 6,237 |
Provide a correct Python 3 solution for this coding contest problem.
There is an integer sequence A of length N whose values are unknown.
Given is an integer sequence B of length N-1 which is known to satisfy the following:
B_i \geq \max(A_i, A_{i+1})
Find the maximum possible sum of the elements of A.
Constraints
* All values in input are integers.
* 2 \leq N \leq 100
* 0 \leq B_i \leq 10^5
Input
Input is given from Standard Input in the following format:
N
B_1 B_2 ... B_{N-1}
Output
Print the maximum possible sum of the elements of A.
Examples
Input
3
2 5
Output
9
Input
2
3
Output
6
Input
6
0 153 10 10 23
Output
53 | instruction | 0 | 3,119 | 5 | 6,238 |
"Correct Solution:
```
N=int(input())
*B, = map(int,input().split())
ans = B[0] + B[-1] + sum(min(b0,b1) for b0,b1 in zip(B[:-1],B[1:]))
print(ans)
``` | output | 1 | 3,119 | 5 | 6,239 |
Provide a correct Python 3 solution for this coding contest problem.
There is an integer sequence A of length N whose values are unknown.
Given is an integer sequence B of length N-1 which is known to satisfy the following:
B_i \geq \max(A_i, A_{i+1})
Find the maximum possible sum of the elements of A.
Constraints
* All values in input are integers.
* 2 \leq N \leq 100
* 0 \leq B_i \leq 10^5
Input
Input is given from Standard Input in the following format:
N
B_1 B_2 ... B_{N-1}
Output
Print the maximum possible sum of the elements of A.
Examples
Input
3
2 5
Output
9
Input
2
3
Output
6
Input
6
0 153 10 10 23
Output
53 | instruction | 0 | 3,120 | 5 | 6,240 |
"Correct Solution:
```
input()
b = list(map(int, input().split()))
print(sum(map(min, [b[0]] + b, b + [b[-1]])))
``` | output | 1 | 3,120 | 5 | 6,241 |
Provide a correct Python 3 solution for this coding contest problem.
There is an integer sequence A of length N whose values are unknown.
Given is an integer sequence B of length N-1 which is known to satisfy the following:
B_i \geq \max(A_i, A_{i+1})
Find the maximum possible sum of the elements of A.
Constraints
* All values in input are integers.
* 2 \leq N \leq 100
* 0 \leq B_i \leq 10^5
Input
Input is given from Standard Input in the following format:
N
B_1 B_2 ... B_{N-1}
Output
Print the maximum possible sum of the elements of A.
Examples
Input
3
2 5
Output
9
Input
2
3
Output
6
Input
6
0 153 10 10 23
Output
53 | instruction | 0 | 3,121 | 5 | 6,242 |
"Correct Solution:
```
N=int(input())
S=list(map(int,input().split()))
ans=0
ans+=S[0]
for i in range(N-2):
ans+=min(S[i],S[i+1])
ans+=S[-1]
print(ans)
``` | output | 1 | 3,121 | 5 | 6,243 |
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