import java.util.*;

public class Main{
  public static void main(String args[]){
    Scanner scanner = new Scanner(System.in);
    int in1 = scanner.nextInt();
    int in2 = scanner.nextInt();
    int in3 = scanner.nextInt();

    if(in1<in2){
      if(in2<in3){
        System.out.println("Yes");
      }else{System.out.println("No");}
    }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