Buggy python submission (verdict: Runtime Error):
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)

    ans = []

    for i in range(n - k):
        ans.append(s[i + k-1] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)

    ans = []

    for i in range(n - k):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p)

    ans = []

    for i in range(n - k):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsom(p)

    ans = []

    for i in range(n - k):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    s = []

    p_ev = list(map(ev, p))

    for i in range(1, n+1):
        s.append(sum(p_ev[:i]))

    ans = []

    for i in range(n - k):
        ans.append(s[i+k]-s[i])
    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):

def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    ans = []
    for i in range(n - k + 1):
        ans.append(sum(map(ev, p[i: i + k])))
    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()

Buggy python submission (verdict: Time Limit Exceeded):
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    ans = []
    for i in range(n - k + 1):
        ans.append(sum(map(ev, p[i: i + k])))
    print(max(ans))


if __name__ == '__main__':
    main()


Fixed submission:
# coding=UTF-8
from collections import deque
from operator import itemgetter
from bisect import bisect_left, bisect
import itertools
import sys
import math
import numpy as np
import time
sys.setrecursionlimit(10**6)
input = sys.stdin.readline


def ev(n):
    return 0.5*(n+1)


def main():
    n, k = map(int, input().split())
    p = list(map(int, input().split()))

    p_ev = list(map(ev, p))

    s = np.cumsum(p_ev)
    s = np.insert(s, 0, 0)

    ans = []

    for i in range(n - k+1):
        ans.append(s[i + k] - s[i])

    print(max(ans))


if __name__ == '__main__':
    main()