import java.util.Scanner;
class Main{
    Scanner sc = new Scanner(System.in);
	
	int a;
	int b;
	int c;
	
	void bc2(){
		a = sc.nextInt();
	    b = sc.nextInt();
		c = sc.nextInt();
		
		if(a<b && b<c && a<c){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}

	public static void main(String[]agrs){
			new Main().bc2();
	}
}
/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