import java.util.*;
public class Main{

	public static void main(String[] args) {
		int i1, i2, i3;
		Scanner sc = new Scanner(System.in);
		i1 = sc.nextInt();
		i2 = sc.nextInt();
		i3 = sc.nextInt();
		if(i1 < i2 && i2 < i3)
			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