#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	if(n>=8){
		if(n<=10){
			cout<<"ertongzu";
		}
	}
	if(n>=11){
		if(n<=14){
			cout<<"shaonianzu";
		}
	}
	if(n>=15){
		if(n<=30){
			cout<<"qingnianzu" ;
		} 
	}
}
/**************************************************************
	Problem: 1670
	User: linzihang
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/