import java.io.*;
import java.util.Scanner;

class Main {
    static Scanner sc = new Scanner(System.in);
    public static void main(String[] args) throws IOException {
        int a = ReadInt();
        int b = ReadInt();
        int c = ReadInt();
        if( a < b && b < c ) {
            System.out.println("Yes");
        }
        else {
            System.out.println("No");
        }
    }
    static int ReadInt() throws IOException {
        return Integer.parseInt(sc.next());
    }
}
/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