#include <iostream>
using namespace std;

int main() {
	
	int n;
	
	cin >> n;
	
	switch (n) {
		case 1: cout << "uno" << endl;
		case 2: cout << "dos" << endl;
		case 3: cout << "tres" << endl;
		case 4: cout << "cuatro" << endl;
	}
	
	return 0;
}