V, D = map(int, input().split())
ans = [[0] * V for i in range(V)]
if V == 1:
    print(1)
elif D == 1:
    for i in range(V):
        for j in range(V):
            ans[i][j] = 1
        print(*ans[i], sep="")
else:
    for i in range(V):
        for j in range(V):
            if i == V - 1 or j == V - 1:
                ans[i][j] = 1
        print(*ans[i], sep="")