import java.util.*;

//input a b c is a < b < c?
public class Main {
	public static void main(String args[])
	{
		Scanner sc = new Scanner(System.in);
		String[] input = sc.nextLine().split(" ");
		int [] abc = new int[input.length];
		for(int i = 0;i<abc.length;i++)
		{
			abc[i] = Integer.parseInt(input[i]);
		}
		String str;
		if(abc[0] < abc[2])
		{
			if(abc[1] < abc[2])
			{
				if(abc[0] < abc[1])
				{
					str = "Yes";
				}
				else
				{
					str = "No";
				}
			}
			else
			{
				str = "No";
			}
		}
		else
		{
			str = "No";
		}
		System.out.println(str);

		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