#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    int n;
    cin >> n;

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            // 检查是否为反对角线（从左下角到右上角）
            if (i + j == n - 1) {
                cout << setw(3) << 1;
            } else {
                cout << setw(3) << 0;
            }
        }
        cout << endl;
    }

    return 0;
}
/**************************************************************
	Problem: 1191
	User: fandaohan
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/