Buggy python submission (verdict: Runtime Error):
import numpy as np

def rain_volume(A, N):
    X = [0]*N
    X[0] = sum(A)
    for i, a in enumerate(A):
        if i%2 != 0:
            X[0] -= 2*a
    for i, a in enumerate(A):
        if i != 0:
            X[i] = 2*A[i] - X[i-1]
    return X

if __name__ == '__main__':
    N = int(input())
    A = deque(map(int, input().split(' ')))

    print(' '.join(map(str, rain_volume(A, N))))

Fixed submission:
def rain_volume(A, N):
    X = [0]*N
    X[0] = sum(A)
    for i, a in enumerate(A):
        if i%2 != 0:
            X[0] -= 2*a
    for i in range(1, N):
        if i != 0:
            X[i] = 2*A[i-1] - X[i-1]
    return X

if __name__ == '__main__':
    N = int(input())
    A = list(map(int, input().split(' ')))

    print(' '.join(map(str, rain_volume(A, N))))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools as it
import numpy as np

def rain_volume(A, N):
    A_citer = it.cycle(A)
    X = np.array([0]*N)
    for i in range(N):
        if i%2 == 0:
            A_p = [next(A_citer) for i in range(N)]
            X += A_p
            next(A_citer)
        elif i%2 != 0:
            A_m = [-next(A_citer) for i in range(N)]
            X += A_m
            next(A_citer)
    return X

if __name__ == '__main__':
    N = int(input())
    A = np.array(list(map(int, input().split(' '))))

    #N = 10**4 - 1
    #A = [10**9]*N
    print(' '.join(map(str, rain_volume(A, N))))

Fixed submission:
def rain_volume(A, N):
    X = [0]*N
    X[0] = sum(A)
    for i, a in enumerate(A):
        if i%2 != 0:
            X[0] -= 2*a
    for i in range(1, N):
        if i != 0:
            X[i] = 2*A[i-1] - X[i-1]
    return X

if __name__ == '__main__':
    N = int(input())
    A = list(map(int, input().split(' ')))

    print(' '.join(map(str, rain_volume(A, N))))

Buggy python submission (verdict: Runtime Error):
import itertools as it
import numpy as np

def rain_volume(A, N):
    A_citer = it.cycle(A)
    X = np.array([0]*N)
    for i in range(N):
        if i%2 == 0:
            A_p = [next(A_citer) for i in range(N)]
            X += A_p
            next(A_citer)
        elif i%2 != 0:
            A_m = [-next(A_citer) for i in range(N)]
            X += A_m
            next(A_citer)
    return X

if __name__ == '__main__':
    N = int(input())
    A = np.array(list(map(int, input().split(' '))))

    #N = 10**4 - 1
    #A = [10**9]*N
    print(' '.join(map(str, rain_volume(A, N))))

Fixed submission:
def rain_volume(A, N):
    X = [0]*N
    X[0] = sum(A)
    for i, a in enumerate(A):
        if i%2 != 0:
            X[0] -= 2*a
    for i in range(1, N):
        if i != 0:
            X[i] = 2*A[i-1] - X[i-1]
    return X

if __name__ == '__main__':
    N = int(input())
    A = list(map(int, input().split(' ')))

    print(' '.join(map(str, rain_volume(A, N))))

Buggy python submission (verdict: Time Limit Exceeded):
import itertools as it

def rain_volume(A, N):
    A_citer = it.cycle(A)
    X = [0]*N
    for i in range(N):
        if i%2 == 0:
            A_p = [next(A_citer) for i in range(N)]
            X = [sum(t) for t in zip(X, A_p)] 
            next(A_citer)
        if i%2 != 0:
            A_m = [-next(A_citer) for i in range(N)]
            X = [sum(t) for t in zip(X, A_m)]
            next(A_citer)
    return X

if __name__ == '__main__':
    N = int(input())
    A = [t for t in map(int, input().split(' '))]
    print(' '.join(map(str, rain_volume(A, N))))

Fixed submission:
def rain_volume(A, N):
    X = [0]*N
    X[0] = sum(A)
    for i, a in enumerate(A):
        if i%2 != 0:
            X[0] -= 2*a
    for i in range(1, N):
        if i != 0:
            X[i] = 2*A[i-1] - X[i-1]
    return X

if __name__ == '__main__':
    N = int(input())
    A = list(map(int, input().split(' ')))

    print(' '.join(map(str, rain_volume(A, N))))