import java.io.*;
 
class Main{
    public static void main(String[] args) throws IOException{
     
        int x,y,z;
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String str[] = br.readLine().split(" ");
        x = Integer.parseInt(str[0]);
        y = Integer.parseInt(str[1]);
	z = Integer.parseInt(str[2]);

	if(x<y && y<z){
        	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