import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner stdIn = new Scanner (System.in);

		int a = stdIn.nextInt();
		int b = stdIn.nextInt();
		int c = stdIn.nextInt();

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

		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