import java.util.Scanner;

public class HelloWorld {

    public static void main(String[] args) {

                 Scanner sc=new Scanner(System.in);

                 System.out.println("请输入您的年龄：");

                 int age=sc.nextInt();

                 String str=(age>=18)?"恭喜你成年了":"很遗憾！你还是一个未成年";

                 System.out.println(str);             

     }

}