import java.util.Scanner;

public class Yuki056 {
    public static void main(String[] args) {
        Yuki056 hoge = new Yuki056();
    }

    Yuki056() {
        Scanner scanner = new Scanner(System.in);
        int D = scanner.nextInt();
        int P = scanner.nextInt();

        System.out.println((D * 100 + D * P) / 100);
    }

}