import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        if(n / 100 != 0 || n / 10 == 0) {
            System.out.println("No");
        }else {
            System.out.println("Yes");
        }
    }
}