import java.util.Scanner;
class Main{
public static void main(String[] args){
Scanner scan =new Scanner(System.in);
String str1=scan.next();
String str2=scan.next();
String str3=scan.next();
int a=Integer.parseInt(str1);
int b=Integer.parseInt(str2);
int c=Integer.parseInt(str3);
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