import java.util.*;

class Main {
    public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
	int a, b, c;
	String[] line = sc.nextLine().split(" ");
	a = Integer.parseInt(line[0]);
	b = Integer.parseInt(line[1]);
	c = Integer.parseInt(line[2]);

	if (a < b && b < c) {
	    System.out.println("Yes");
	} 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