multiplyBigNumber

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class multiplyBigNumbers {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        String input = scan.nextLine();
        int n = Integer.parseInt(scan.nextLine());

        List<Integer> output = new ArrayList<>();

        int b = 0;

        if (n == 0){
            System.out.println(0);
            return;
        }

        for (int i = input.length() - 1; i >= 0; i--) {

            int a = Character.getNumericValue(input.charAt(i)) * n + b;
            b = a / 10;
            int c = a % 10;

            output.add(0, c);
        }

        if (b != 0) {
            output.add(0, b);
        }

        for (Integer integer : output) {
            System.out.print(integer);
        }
    }
}