import java.io.IOException;
import java.util.Scanner;
public class Main {
	public static void main(String[] args) throws IOException{
		Scanner sc = new Scanner(System.in);

		int[] array = new int[3];
		String judge;

		for(int i=0;i<3;i++) {
			array[i] = sc.nextInt();
		}

		if(array[0] < array[1] && array[1] < array[2]) {
			judge = "Yes";
		}else {
			judge = "No";
		}

		System.out.println(judge);

		sc.close();
	}
}

/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