import java.io.*;

public class Main {

    public static void main(String args[]) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        String[] st = br.readLine().split(" ");
        int a = Integer.parseInt(st[0]);
        int b = Integer.parseInt(st[1]);
        int c = Integer.parseInt(st[2]);
        bw.append(a < b && b < c ? "Yes\n" : "No\n");
        bw.flush();
    }


}

/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