public class HelloWorld {

    public static void main(String[] args) {

int age=25;

if(age>60){

    System.out.println("老年");

}else if(40>=age<=60){

    System.out.println("中年");

}else if(18>=age<40){

    System.out.println("少年");

}else{

    System.out.println("童年");

}

}

}