import java.util.Scanner;

class Main{

	public static void main(String[] args) {

	int[] n;
	n = new int[3];

	Scanner scan = new Scanner(System.in);

	n[0] = scan.nextInt();
	n[1] = scan.nextInt();
	n[2] = scan.nextInt();

	if(n[0] < n[1] && n[1] < n[2]) System.out.println("Yes");
	else System.out.println("No");

	scan.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