import numpy as np


def solve(V: int, D: int):
    if D == 1:
        return np.ones((V, V), dtype=int)
    else:
        res = np.zeros((V, V), dtype=int)
        res[0, :] = 1
        res[:, 0] = 1
        return res


res = solve(*map(int, input().split()))
for x in res:
    print(*x)