N_4

#include <iostream>
#include <cmath>

using namespace std;

int main() {
    int n;
    cin >> n;
    int a[100][100];

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            a[i][j] = (int) abs(i - j);
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cout << a[i][j] << " ";
        }
    }
    return 0;
}