import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) {
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String integers = br.readLine();
			System.out.println(compare(integers));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private static String compare(String integers) {
		String[] integerss = integers.split(" ");
		int a = Integer.parseInt(integerss[0]);
		int b = Integer.parseInt(integerss[1]);
		int c = Integer.parseInt(integerss[2]);
		if (a < b && b < c) {
			return "Yes";
		}
		return "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