V, D = map(int, input().split())

# Create a complete graph (all edges except self-loops)
E = [[0] * V for _ in range(V)]
for i in range(V):
    for j in range(V):
        if i != j:
            E[i][j] = 1

# Print the matrix
for row in E:
    print(''.join(map(str, row)))