#include <iostream>
using namespace std;
int main() {
int a;
cin>>a;
if(a<=13){
cout<<"childhood";}
if(14<=a &&a<=24){
cout<<"youth";}
if(25<=a&&a<=59){
cout<<"adulthood";}
if(a>=60){
cout<<"old ages";}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgogCnVzaW5nIG5hbWVzcGFjZSBzdGQ7CiAKaW50IG1haW4oKSB7CiAgaW50IGE7CiAgY2luPj5hOwogICBpZihhPD0xMyl7CiAgY291dDw8ImNoaWxkaG9vZCI7fQogICBpZigxNDw9YSAmJmE8PTI0KXsKICBjb3V0PDwieW91dGgiO30KICAgaWYoMjU8PWEmJmE8PTU5KXsKICBjb3V0PDwiYWR1bHRob29kIjt9CiAgaWYoYT49NjApewogICAgIGNvdXQ8PCJvbGQgYWdlcyI7fQogIHJldHVybiAwOwp9CiA=