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