import java.io.*;

public class Main {

    public static void main(String[] args) throws IOException  {
        
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
 
        String[] line = reader.readLine().split(" ");
        int a = Integer.parseInt(line[0]);
        int b = Integer.parseInt(line[1]);
        int c = Integer.parseInt(line[2]);
        
        if(a < b){
            if(b < c){
                System.out.println("Yes");
            }
            else System.out.println("No");
        }
        
        else System.out.println("No");
        
        
    }
    
}
/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