import java.io.*;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader r =
            new BufferedReader(new InputStreamReader(System.in), 1);
        String is = r.readLine();
        String[] sp = is.split(" ");
        if(sp.length > 3)
        	return;
        int a = Integer.parseInt(sp[0]);
        int b = Integer.parseInt(sp[1]);
        int c = Integer.parseInt(sp[2]);
        if(a<b){
        	if(b<c){
        		System.out.println("Yes");
        	}else
            	System.out.println("No");
        }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