import java.io.IOException;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws IOException {
		int a, b, c;
		Scanner sc = new Scanner(System.in);
		a = Integer.parseInt(sc.next());
		b = Integer.parseInt(sc.next());
		c = Integer.parseInt(sc.next());

		if ((a < b) && (b < c)) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		
		sc.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