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

n, m, q = map(int, input().split())
S = [[0]*(m+1)] + [[0] + list(map(int, list(input().rstrip()))) for _ in range(n)]
B = [[0]*(m+1) for _ in range(n+1)]
U = [[0]*(m+1) for _ in range(n+1)]
L = [[0]*(m+1) for _ in range(n+1)]
for i in range(1, n+1):
  for j in range(1, m+1):
    if S[i][j]:
      U[i][j] = S[i-1][j]
      L[i][j] = S[i][j-1]
for i in range(1, n+1):
  B[i] = tuple(accumulate(S[i]))
  U[i] = tuple(accumulate(U[i]))
  L[i] = tuple(accumulate(L[i]))
B = list(zip(*B))
U = list(zip(*U))
L = list(zip(*L))
for j in range(1, m+1):
  B[j] = tuple(accumulate(B[j]))
  U[j] = tuple(accumulate(U[j]))
  L[j] = tuple(accumulate(L[j]))
B = tuple(zip(*B))
U = tuple(zip(*U))
L = tuple(zip(*L))
def calc_b(x1, y1, x2, y2):
  return B[x2][y2] - B[x1-1][y2] - B[x2][y1-1] + B[x1-1][y1-1]
def calc_u(x1, y1, x2, y2):
  return U[x2][y2] - U[x1][y2] - U[x2][y1-1] + U[x1][y1-1]
def calc_l(x1, y1, x2, y2):
  return L[x2][y2] - L[x1-1][y2] - L[x2][y1] + L[x1-1][y1]

for _ in range(q):
  x1, y1, x2, y2 = map(int, input().split())
  res = calc_b(x1, y1, x2, y2) - (calc_u(x1, y1, x2, y2) + calc_l(x1, y1, x2, y2))
  print(res)

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

n, m, q = map(int, input().split())
S = [[0]*(m+1)] + [[0] + list(map(int, list(input().rstrip()))) for _ in range(n)]
B = [[0]*(m+1) for _ in range(n+1)]
U = [[0]*(m+1) for _ in range(n+1)]
L = [[0]*(m+1) for _ in range(n+1)]
for i in range(1, n+1):
  for j in range(1, m+1):
    B[i][j] = B[i-1][j] + B[i][j-1] - B[i-1][j-1] + S[i][j]
    U[i][j] = U[i-1][j] + U[i][j-1] - U[i-1][j-1] + U[i][j]
    L[i][j] = L[i-1][j] + L[i][j-1] - L[i-1][j-1] + L[i][j]
    if S[i][j]:
      U[i][j] += S[i-1][j]
      L[i][j] += S[i][j-1]
    
def calc_b(x1, y1, x2, y2):
  return B[x2][y2] - B[x1-1][y2] - B[x2][y1-1] + B[x1-1][y1-1]
def calc_u(x1, y1, x2, y2):
  return U[x2][y2] - U[x1][y2] - U[x2][y1-1] + U[x1][y1-1]
def calc_l(x1, y1, x2, y2):
  return L[x2][y2] - L[x1-1][y2] - L[x2][y1] + L[x1-1][y1]

for _ in range(q):
  x1, y1, x2, y2 = map(int, input().split())
  res = calc_b(x1, y1, x2, y2) - (calc_u(x1, y1, x2, y2) + calc_l(x1, y1, x2, y2))
  print(res)

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

def main():
  n, m, q = map(int, input().split())
  S = [[0]*(m+1)] + [[0] + list(map(int, list(input().rstrip()))) for _ in range(n)]
  B = [[0]*(m+1) for _ in range(n+1)]
  U = [[0]*(m+1) for _ in range(n+1)]
  L = [[0]*(m+1) for _ in range(n+1)]
  for i in range(1, n+1):
    for j in range(1, m+1):
      if S[i][j]:
        U[i][j] = S[i-1][j]
        L[i][j] = S[i][j-1]
  for i in range(1, n+1):
    B[i] = list(accumulate(S[i]))
    U[i] = list(accumulate(U[i]))
    L[i] = list(accumulate(L[i]))
  B = list(zip(*B))
  U = list(zip(*U))
  L = list(zip(*L))
  for j in range(1, m+1):
    B[j] = list(accumulate(B[j]))
    U[j] = list(accumulate(U[j]))
    L[j] = list(accumulate(L[j]))
  B = list(zip(*B))
  U = list(zip(*U))
  L = list(zip(*L))
  def calc_b(x1, y1, x2, y2):
    return B[x2][y2] - B[x1-1][y2] - B[x2][y1-1] + B[x1-1][y1-1]
  def calc_u(x1, y1, x2, y2):
    return U[x2][y2] - U[x1][y2] - U[x2][y1-1] + U[x1][y1-1]
  def calc_l(x1, y1, x2, y2):
    return L[x2][y2] - L[x1-1][y2] - L[x2][y1] + L[x1-1][y1]

  for _ in range(q):
    x1, y1, x2, y2 = map(int, input().split())
    res = calc_b(x1, y1, x2, y2) - (calc_u(x1, y1, x2, y2) + calc_l(x1, y1, x2, y2))
    print(res)
if __name__ == "__main__":
  main()

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

n, m, q = map(int, input().split())
S = [[0]*(m+1)] + [[0] + list(map(int, list(input().rstrip()))) for _ in range(n)]
B = [[0]*(m+1) for _ in range(n+1)]
U = [[0]*(m+1) for _ in range(n+1)]
L = [[0]*(m+1) for _ in range(n+1)]
for i in range(1, n+1):
  for j in range(1, m+1):
    B[i][j] = B[i-1][j] + B[i][j-1] - B[i-1][j-1] + S[i][j]
    U[i][j] = U[i-1][j] + U[i][j-1] - U[i-1][j-1] + U[i][j]
    L[i][j] = L[i-1][j] + L[i][j-1] - L[i-1][j-1] + L[i][j]
    if S[i][j]:
      U[i][j] += S[i-1][j]
      L[i][j] += S[i][j-1]
    
def calc_b(x1, y1, x2, y2):
  return B[x2][y2] - B[x1-1][y2] - B[x2][y1-1] + B[x1-1][y1-1]
def calc_u(x1, y1, x2, y2):
  return U[x2][y2] - U[x1][y2] - U[x2][y1-1] + U[x1][y1-1]
def calc_l(x1, y1, x2, y2):
  return L[x2][y2] - L[x1-1][y2] - L[x2][y1] + L[x1-1][y1]

for _ in range(q):
  x1, y1, x2, y2 = map(int, input().split())
  res = calc_b(x1, y1, x2, y2) - (calc_u(x1, y1, x2, y2) + calc_l(x1, y1, x2, y2))
  print(res)

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

n, m, q = map(int, input().split())
S = [[0]*(m+1)] + [[0] + list(map(int, list(input().rstrip()))) for _ in range(n)]
B = [[0]*(m+1) for _ in range(n+1)]
U = [[0]*(m+1) for _ in range(n+1)]
L = [[0]*(m+1) for _ in range(n+1)]
for i in range(1, n+1):
  for j in range(1, m+1):
    if S[i][j]:
      U[i][j] = S[i-1][j]
      L[i][j] = S[i][j-1]
for i in range(1, n+1):
  B[i] = list(accumulate(S[i]))
  U[i] = list(accumulate(U[i]))
  L[i] = list(accumulate(L[i]))
B = list(zip(*B))
U = list(zip(*U))
L = list(zip(*L))
for j in range(1, m+1):
  B[j] = list(accumulate(B[j]))
  U[j] = list(accumulate(U[j]))
  L[j] = list(accumulate(L[j]))
B = list(zip(*B))
U = list(zip(*U))
L = list(zip(*L))
def calc_b(x1, y1, x2, y2):
  return B[x2][y2] - B[x1-1][y2] - B[x2][y1-1] + B[x1-1][y1-1]
def calc_u(x1, y1, x2, y2):
  return U[x2][y2] - U[x1][y2] - U[x2][y1-1] + U[x1][y1-1]
def calc_l(x1, y1, x2, y2):
  return L[x2][y2] - L[x1-1][y2] - L[x2][y1] + L[x1-1][y1]

for _ in range(q):
  x1, y1, x2, y2 = map(int, input().split())
  res = calc_b(x1, y1, x2, y2) - (calc_u(x1, y1, x2, y2) + calc_l(x1, y1, x2, y2))
  print(res)

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

n, m, q = map(int, input().split())
S = [[0]*(m+1)] + [[0] + list(map(int, list(input().rstrip()))) for _ in range(n)]
B = [[0]*(m+1) for _ in range(n+1)]
U = [[0]*(m+1) for _ in range(n+1)]
L = [[0]*(m+1) for _ in range(n+1)]
for i in range(1, n+1):
  for j in range(1, m+1):
    B[i][j] = B[i-1][j] + B[i][j-1] - B[i-1][j-1] + S[i][j]
    U[i][j] = U[i-1][j] + U[i][j-1] - U[i-1][j-1] + U[i][j]
    L[i][j] = L[i-1][j] + L[i][j-1] - L[i-1][j-1] + L[i][j]
    if S[i][j]:
      U[i][j] += S[i-1][j]
      L[i][j] += S[i][j-1]
    
def calc_b(x1, y1, x2, y2):
  return B[x2][y2] - B[x1-1][y2] - B[x2][y1-1] + B[x1-1][y1-1]
def calc_u(x1, y1, x2, y2):
  return U[x2][y2] - U[x1][y2] - U[x2][y1-1] + U[x1][y1-1]
def calc_l(x1, y1, x2, y2):
  return L[x2][y2] - L[x1-1][y2] - L[x2][y1] + L[x1-1][y1]

for _ in range(q):
  x1, y1, x2, y2 = map(int, input().split())
  res = calc_b(x1, y1, x2, y2) - (calc_u(x1, y1, x2, y2) + calc_l(x1, y1, x2, y2))
  print(res)