import java.io.*;

class Main {
	public static void main(String[] args){
		int a, b, c;
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			
			String[] line = br.readLine().split(" ");
			a = Integer.parseInt(line[0]);
			b = Integer.parseInt(line[1]);
			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");
			    }
		} catch(Exception e){
		}
	}
}
/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