import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner a = new Scanner(System.in);
    String input = a.nextLine();
    String[] spt = input.split(" ");
    int num1 = Integer.parseInt(spt[0]);
    int num2 = Integer.parseInt(spt[1]);
    int num3 = Integer.parseInt(spt[2]);
    
    if(num1 < num2 && num2 < num3) 
    {
            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