import java.util.*;

public class Main{

	public static void main (String[] args) throws java.io.IOException{

		int x,y,z;
		Scanner in = new Scanner(System.in);
		x = in.nextInt();
		y = in.nextInt();
		z = in.nextInt();
		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