Varianta13-s2e5.cpp

#include <iostream>
using namespace std;

int main() {

	int n,a[25][25],i,j;
	cin >> n;

	for (i = 1; i <= n; i++)
		for (j = 1; j <= n; j++)
			if (i + j == n + 1)
				a[i][j] = 0;
			else if (i + j < n + 1)
				a[i][j] = j;
			else
				a[i][j] = n - i + 1;

	for (i = 1; i <= n; i++) {
		for (j = 1; j <= n; j++)
			cout << a[i][j] << " ";
		cout << '\n';
	}

	return 0;
}