import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int prepare = a * b; 
        int prepare2 = prepare / 100;
        int result = a + prepare2;
        System.out.println(result);
    }
}