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