import java.util.Scanner;
import java.util.Arrays;

class Main{
    public static void main(String[] args){
      Scanner sc = new Scanner(System.in);
      String A = sc.nextLine();
      String[] max = A.split(" ");
      

      int a = Integer.parseInt(max[0]);
      int b = Integer.parseInt(max[1]);
      int c = Integer.parseInt(max[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