import java.util.Scanner;
public class Main { 
public static void main(String args[]) { 
Scanner sc = new Scanner(System.in);
int n=sc.nextInt();
int m=sc.nextInt();
int o=sc.nextInt();

if(n<m && m<o){
   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