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

public class Main {
	public static void main(String[] args) throws IOException {
		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);
		String buf = br.readLine();
		String[] input = buf.split(" ");
		int a = Integer.parseInt(input[0]);
		int b = Integer.parseInt(input[1]);
		int c = Integer.parseInt(input[2]);

		String result = new String();
		if(a < b && b < c){
			result = "Yes";
		}else{
			result = "No";
		}
		System.out.println(result);
	}
}
/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