#include<string.h>
#include<stdio.h>
int main()
{
    int m;
    scanf("%d",&m);
     if(m>=15&&m<=30)
         printf("qingnianzu");
       if(m>=11&&m<=14)
           printf("shaonianzu");
       if(m>=8&&m<=10)
           printf("ertongzu");
     
    return 0;
}
/**************************************************************
	Problem: 1670
	User: admin
	Language: C
	Result: Accepted
	Time:22 ms
	Memory:1144 kb
****************************************************************/