//Range
import java.util.Scanner;

class Main {
    public void cubic() {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        
        String out = "No";
        if (a < b) {
            if(b < c) {
                out = "Yes";
            }
        }
                                        
        System.out.println(out);
    }
    
    public static void main(String[] args){
    new Main().cubic();
    }
}
/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