import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		solve();
	}

	private static void solve() {
		Scanner scn = new Scanner(System.in);
		int a = scn.nextInt();
		int b = scn.nextInt();
		int c = scn.nextInt();
		if(a<b&&b<c){
			System.out.println("Yes");
		}else
			System.out.println("No");
		scn.close();
	}

}
/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