#include <bits/stdc++.h> using namespace std;

int main() { int a; cin >> a; if (a <= 30 && a >= 15) { cout << "qingnianzu"; } if (a <= 14 && a >= 11) { cout << "shaonianzu"; } if (a <= 10 && a >= 8) { cout << "ertongzu"; } return 0; }