import java.util.*;

public class Main {

    public static void main(String[] args) throws Exception {
        Scanner stdId = new Scanner(System.in);
        int a = stdId.nextInt();
        int b = stdId.nextInt();
        int c = stdId.nextInt();

        String j = "No";

        if (a < b && b < c) {
            j = "Yes";
        }

        System.out.println(j);

    }
}
/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