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

public class Main {

	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		int[] numArray = parseInt(getSplitLine(line));

		if (numArray[0] < numArray[1] && numArray[1] < numArray[2]) {
			System.out.println("Yes");
			return;
		}
		System.out.println("No");
	}

	private static String[] getSplitLine(String line) {
		return line.split("\\s");
	}

	private static int[] parseInt(String[] line) {
		int[] numArray = new int[line.length];
		for (int i = 0; i < line.length; i++) {
			numArray[i] = Integer.parseInt(line[i]);
		}
		return numArray;
	}
}
/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