#include <iostream>
using namespace std;

/* 
 * Jamie Levy
 *
 * HW 5 Solution
 *
 * triangle1.cpp
 */

int main(){
	int num;
	cout << "Enter a number :> ";
    cin >> num;

    
    for( int i = 1; i <= num; i++){
        for( int j = i; j <= num; j++){
            cout << j << " ";
        }
        cout << endl;
    }

    return 0;
}