import java.util.Scanner;
class Main{
    int a,b,c;
    public void solve(){
        Scanner sc = new Scanner(System.in);
        a = sc.nextInt();
        b = sc.nextInt();
        c = sc.nextInt();
        if (a < b){
            if (b < c){
                System.out.println("Yes");
            }else{
                System.out.println("No");
            }
        }else{
                System.out.println("No");
        }
    }
    public static void main(String[] args){
        new Main().solve();     
    }
 
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz