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 str = br.readLine();
		String strArray[] = str.split(" ", 0);
		int num[] = new int[strArray.length];

		for(int i=0; i<strArray.length; i++){
			num[i] = Integer.parseInt(strArray[i]);
		}

		if(num[0]<num[1] && num[1]<num[2])
			System.out.println("Yes");
		else
			System.out.println("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