Контрольная стратегия

//
//  main.cpp
//  STRATEGY
//
//  Created by Андрей Москалёв on 17.01.17.
//  Copyright © 2017 Андрей Москалёв. All rights reserved.
//

#include <iostream>

using namespace std;

int main(int argc, const char * argv[]) {
    int n;
    cin >> n;
    int x[n][n];
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (i + j == n - 1) x[i][j] = 1;
            else if (i + j < n) x[i][j] = 0;
            else x[i][j] = 2;
        }
    }
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            cout << x[i][j] << ' ';
        }
        cout << endl;
    }
}