import java.util.*;
public class Main{
	Scanner sc = new Scanner(System.in);
	int a,b,c;
	
	void bc(){
		a=sc.nextInt();
		b=sc.nextInt();
		c=sc.nextInt();
		
		if(a<b && b<c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
	
	public static void main(String[] args){     
		new Main().bc();     
		} 
	}
/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