import java.util.*;
public class Main {
    public static void main(String[] args) {
        // 自分の得意な言語で
        // Let's チャレンジ！！
        Scanner scan = new Scanner(System.in);
        int money = scan.nextInt();
        double tax = scan.nextInt() * 0.001 ;
		double ans = money + (money * tax);

        System.out.println(ans);
    }
}