with open('input.txt') as f_in:
    N = int(f_in.readline())

x = [[0 for i in range(N)] for j in range(N)]

for i in range(N):
    x[i][i] = 1

with open('output.txt', 'w') as f_out:
    for i in range(N):
        print(' '.join(map(str, x[i])), file = f_out)