import java.util.Scanner;

public class Main { 
	public static void main(String[] args){
        // 変数と配列
	String str;
        int inNumber1, inNumber2, inNumber3;
 
        // 各数字の入力
        Scanner scan = new Scanner(System.in);
        str = scan.next();
        inNumber1 = Integer.parseInt(str);
        str = scan.next();
        inNumber2 = Integer.parseInt(str);
        str = scan.next();
        inNumber3 = Integer.parseInt(str);

        // 条件判定
        if(inNumber1 < inNumber2 && inNumber2 < inNumber3)
                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