v, d = map(int, input().split())
e = [[0] * v for _ in range(v)]
if d == 1:
    e = [[1] * v for _ in range(v)]
else:
    e[0] = [1] * v
    for i in range(v):
        e[i][0] = 1
for t in e:
    for x in t:
        print(x, end='')
    print()