import java.io.*;
public class Main{
	public static void main(String [] args) throws NumberFormatException, IOException{
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		String[] st=br.readLine().split(" ");
		int a=Integer.parseInt(st[0]);
		int b=Integer.parseInt(st[1]);
		int c=Integer.parseInt(st[2]);
		System.out.println(a<b&&b<c?"Yes":"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