Tablet

n, m = map(int, input().split())

matrix = []
while n:
    matrix.append(list(map(int, input().split())))
    n -= 1

res = []
q = []

for i in range(len(matrix)):
    row = []
    for j in range(m):
        if matrix[i][j] == 1:
            row.append(0)
            q.append((i, j))
        else:
            row.append(-1)
    res.append(row)

while q:
    x, y = q.pop(0)
    for xp, yp in [(x+1, y), (x-1, y), (x, y+1), (x, y-1)]:
        if 0 <= xp < len(matrix) and 0 <= yp < m and res[xp][yp] == -1:
            q.append((xp, yp))
            res[xp][yp] = res[x][y] + 1

for row in res:
    print(' '.join([str(elem) for elem in row]))