import java.util.Scanner;

class Main{
public static void main(String[] args){

 int a;
 int b;
int c;
Scanner s = new Scanner(System.in);
a=s.nextInt();
b=s.nextInt();
c=s.nextInt();

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