import java.util.Scanner;

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