#include <iostream>
using namespace std;

int main() {
    int age;
    cin >> age;
    if (age >= 15 && age <= 30) {
        cout << "qingnianzu" << endl;
    } else if (age >= 11 && age <= 14) {
        cout << "shaonianzu" << endl;
    } else if (age >= 8 && age <= 10) {
        cout << "ertongzu" << endl;
    }
    return 0;
}
/**************************************************************
	Problem: 1670
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:28 ms
	Memory:2072 kb
****************************************************************/