using System;
using System.Collections.Generic;

namespace multiplyBigNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            string number = Console.ReadLine().TrimStart(new char[] { '0' });
            int multiplier = int.Parse(Console.ReadLine());
            int cary = 0;
            int sum = 0;
            List<int> multipliedNums = new List<int>();
            if (multiplier > 0 && number.Length > 1)
            {
                for (int i = number.Length - 1; i >= 0; i--)
                {
                    char digit = number[i];
                    int multipliedNum = int.Parse(digit.ToString());
                    sum = (multipliedNum * multiplier) + cary;
                    int nextNum = sum % 10;
                    multipliedNums.Add(nextNum);
                    cary = sum / 10;
                }
                if (cary > 0)
                {
                    multipliedNums.Add(cary);
                }
            }
            else
            {
                if (number == "")
                {
                    number = "0";
                }
                sum = multiplier * int.Parse(number);
                multipliedNums.Add(sum);
            }
            if (multipliedNums.TrueForAll(x => x == 0))
            {
                Console.WriteLine(0);
            }
            else
            {
                multipliedNums.Reverse();
                Console.WriteLine(string.Join("", multipliedNums));
            }
        }
    }
}