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