v, d = map(int, input().split())
if d == 1:
    for i in range(v):
        print("1" * v)
else:
    ans = [["0"] * v for i in range(v)]
    for i in range(v):
        ans[i][0] = ans[0][i] = "1"
    for i in range(v):
        print("".join(ans[i]))