import java.io.*;
import java.util.*;

//height 違う
public class Main{
    static int count =0;
    public static void main(String[] args)throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String str;
        str = br.readLine();
        
        String[] tmp = str.split("\\s");
        int[] num = new int[3];
        num[0] = Integer.parseInt(tmp[0]);
        num[1] = Integer.parseInt(tmp[1]);
        num[2] = Integer.parseInt(tmp[2]);
        run(num[0],num[1],num[2]);

    }
    public static void run(int a,int b,int c){
        if(a< b && b < c){
            System.out.println("Yes");
        }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