import java.util.Scanner

import java.util.Scanner;
public class tftest01
{
public static void main(String【】 args)
{
Scanner s = new Scanner(System.in);
System.out.println("请输入您的年龄：");
int mum = s.nextInt();
String str ="老年";
if(mum <0 || mum >150){
str = "您提供的年龄不合法";
}else if(mum <= 5){
str = "幼儿";
}else if(mum <= 10){
str ="少年";
}else if(mum <= 18){
str ="青少年";
}else if(mum <= 35){
str ="青年";
}else if(mum <= 55){
str="中年";
}
System.out.println(str);
}
}