import numpy as np

사각형 = 5
탐색가능지역 = 3

지뢰밭 = [[1, 0, 0, 1, 0],
          [0, 1, 0, 0, 1],
          [0, 0, 0, 1, 0],
          [0, 0, 0, 0, 0],
          [0, 0, 1, 0, 0]]

s = 0
for i in range(사각형 - 탐색가능지역 + 1):
    for j in range(탐색가능지역):
        if np.sum(지뢰밭[i:탐색가능지역+i, j:탐색가능지역+j]) > s: 
            s = np.sum(지뢰밭[i:탐색가능지역+i, j:탐색가능지역+j])
print(s)