import java.io.*;
public class TestAge{
 	public static void main(String[] args) throws IOException{
  	InputStreamReader  in=new InputStreamReader(System.in); 
 	BufferedReader  bin=new BufferedReader(in);
	int age;
	System.out.println("һ䣬س");
	age=Integer.parseInt(bin.readLine());
	if(age<18)
	   System.out.println("һδˣ");
	}
}
