import java.util.Scanner;

public class Main{


	public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	}

	//???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			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