题解 | 牛妹数

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        if(n>50&&n%2==0){
            System.out.println("yes");
        }else{
            System.out.println("no");
        }
    }
}