import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String line = sc.nextLine();
		String[] split = line.split(" ");
		int a = Integer.parseInt(split[0]);
		int b = Integer.parseInt(split[1]);
		int c = Integer.parseInt(split[2]);
		String output = null;
		if (a < b && b < c) {
			output = "Yes";
		} else {
			output = "No";
		}
		System.out.println(output);
		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