Buggy python submission (verdict: Time Limit Exceeded):
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()

Fixed submission:
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
import copy

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]


R = copy.deepcopy(S)
for h in range(H):
    s = 0
    for w in range(W):
        if R[h][w] == 1:
            s += 1
            R[h][w] = s
        else:
            s = 0
    l = 0
    for w in range(W-1, -1, -1):
        if R[h][w] > 0:
            l = max(l, R[h][w])
            R[h][w] = l
        else:
            l = 0

L = copy.deepcopy(S)
for w in range(W):
    s = 0
    for h in range(H):
        if L[h][w] == 1:
            s += 1
            L[h][w] = s
        else:
            s = 0
    l = 0
    for h in range(H-1, -1, -1):
        if L[h][w] > 0:
            l = max(l, L[h][w])
            L[h][w] = l
        else:
            l = 0
ans = 0
for h in range(H):
    for w in range(W):
        ans = max(ans, L[h][w]+R[h][w]-1)
print(ans)

Fixed submission:
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()

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

H, W = map(int, input().split())
state = np.array([list(input()) for _ in range(H)])


def light(row, col, state):
    lighted_count = 0
    col1 = copy.copy(col)
    next = '.'
    while next == '.':
        lighted_count += 1
        col1 += 1
        if col1 >= W:
            break
        next = state[row, col1]
    
    col2 = copy.copy(col)
    next = '.'
    while next == '.':
        lighted_count += 1
        col2 -= 1
        if col2 < 0:
            break
        next = state[row, col2]

    row1 = copy.copy(row)
    next = '.'
    while next == '.':
        lighted_count += 1
        row1 += 1
        if row1 >= H:
            break
        next = state[row1, col]

    row2 = copy.copy(row)
    next = '.'
    while next == '.':
        lighted_count += 1
        row2 -= 1
        if row2 < 0:
            break
        next = state[row2, col]

    lighted_count -= 3
    return lighted_count



def blank_fun(state):
    blank_list = []
    for i, item in np.ndenumerate(state):
        if item == '.':
            blank_list.append(i)
    return blank_list


blank_list = blank_fun(state)
blank_count = 0
for blank in blank_list:
    row = blank[0]
    col = blank[1]
    blank_count_now = light(row, col, state)

    if blank_count_now > blank_count:
        blank_count = blank_count_now


print(blank_count)






Fixed submission:
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
import copy

H, W = map(int, input().split())
state = []
for i in range(H):
    row_list = list(input())
    state.append(row_list)


def light(row, col, state):
    lighted_count = 0
    col1 = copy.copy(col)
    next = '.'
    while next == '.':
        lighted_count += 1
        col1 += 1
        if col1 >= W:
            break
        next = state[row][col1]
    
    col2 = copy.copy(col)
    next = '.'
    while next == '.':
        lighted_count += 1
        col2 -= 1
        if col2 < 0:
            break
        next = state[row][col2]

    row1 = copy.copy(row)
    next = '.'
    while next == '.':
        lighted_count += 1
        row1 += 1
        if row1 >= H:
            break
        next = state[row1][col]

    row2 = copy.copy(row)
    next = '.'
    while next == '.':
        lighted_count += 1
        row2 -= 1
        if row2 < 0:
            break
        next = state[row2][col]

    lighted_count -= 3
    return lighted_count



def blank_fun(state):
    blank_list = []
    for h in range(H):
        for w in range(W):
            if state[h][w] == '.':
                blank_list.append([h, w])
    return blank_list


blank_list = blank_fun(state)
blank_count = 0
for blank in blank_list:
    row = blank[0]
    col = blank[1]
    blank_count_now = light(row, col, state)

    if blank_count_now > blank_count:
        blank_count = blank_count_now


print(blank_count)






Fixed submission:
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
import copy

H, W = map(int, input().split())
state = []
for i in range(H):
    row_list = list(input())
    state.append(row_list)


def light(row, col, state):
    lighted_count = 0
    col1 = copy.copy(col)
    next = '.'
    while next == '.':
        state[row][col1] = '.'
        lighted_count += 1
        col1 += 1
        if col1 >= W:
            break
        next = state[row][col1]
    
    col2 = copy.copy(col)
    next = '.'
    while next == '.':
        state[row][col2] = '.'
        lighted_count += 1
        col2 -= 1
        if col2 < 0:
            break
        next = state[row][col2]

    row1 = copy.copy(row)
    next = '.'
    while next == '.':
        state[row1][col] = '.'
        lighted_count += 1
        row1 += 1
        if row1 >= H:
            break
        next = state[row1][col]

    row2 = copy.copy(row)
    next = '.'
    while next == '.':
        state[row2][col] = '.'
        lighted_count += 1
        row2 -= 1
        if row2 < 0:
            break
        next = state[row2][col]

    lighted_count -= 3
    return lighted_count



def blank_fun(state):
    blank_list = []
    for h in range(H):
        for w in range(W):
            if state[h][w] == '.':
                blank_list.append([h, w])
    return blank_list


blank_list = blank_fun(state)
blank_count = 0
for blank in blank_list:
    row = blank[0]
    col = blank[1]
    blank_count_now = light(row, col, state)

    if blank_count_now > blank_count:
        blank_count = blank_count_now


print(blank_count)

Fixed submission:
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
import copy

H, W = map(int, input().split())
state = []
for i in range(H):
    row_list = list(input())
    state.append(row_list)


def light(row, col, state):
    col1 = copy.copy(col)
    next = '.'
    while next == '.':
        state[row][col1] = '+'
        col1 += 1
        if col1 >= W:
            break
        next = state[row][col1]
    
    col2 = copy.copy(col)
    next = '.'
    while next == '.':
        state[row][col2] = '+'
        col2 -= 1
        if col2 < 0:
            break
        next = state[row][col2]
    
    row1 = copy.copy(row)
    next = '.'
    while next == '.':
        state[row1][col] = '+'
        row1 += 1
        if row1 >= H:
            break
        next = state[row1][col]
    
    row2 = copy.copy(row)
    next = '.'
    while next == '.':
        state[row2][col] = '+'
        row2 -= 1
        if row2 < 0:
            break
        next = state[row2][col]
    
    return state


def lighted_fun(state):
    blank_list = []
    for h in range(H):
        for w in range(W):
            if state[h][w] == '+':
                blank_list.append([h, w])
    return blank_list


def blank_fun(state):
    blank_list = []
    for h in range(H):
        for w in range(W):
            if state[h][w] == '.':
                blank_list.append([h, w])
    return blank_list


blank_list = blank_fun(state)
blank_count = 0
for blank in blank_list:
    row = blank[0]
    col = blank[1]
    c_state = copy.deepcopy(state)
    lighted_state = light(row, col, c_state)
    blank_count_now = len(lighted_fun(lighted_state))
    if blank_count_now > blank_count:
        blank_count = blank_count_now


print(blank_count)






Fixed submission:
import copy
import sys
input = sys.stdin.readline

H, W = map(int, input().split())
S = [[1 if a == '.' else 0 for a in list(input())]  for _ in range(H)]

def main():
    R = copy.deepcopy(S)
    for h in range(H):
        s = 0
        for w in range(W):
            if R[h][w] == 1:
                s += 1
                R[h][w] = s
            else:
                s = 0
        l = 0
        for w in range(W-1, -1, -1):
            if R[h][w] > 0:
                l = max(l, R[h][w])
                R[h][w] = l
            else:
                l = 0

    L = copy.deepcopy(S)
    for w in range(W):
        s = 0
        for h in range(H):
            if L[h][w] == 1:
                s += 1
                L[h][w] = s
            else:
                s = 0
        l = 0
        for h in range(H-1, -1, -1):
            if L[h][w] > 0:
                l = max(l, L[h][w])
                L[h][w] = l
            else:
                l = 0
    ans = 0
    for h in range(H):
        for w in range(W):
            ans = max(ans, L[h][w]+R[h][w]-1)
    print(ans)

if __name__ == "__main__":
    main()