#include <algorithm>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <vector>
#define int long long
#define endl '\n'
using namespace std;

vector<int> operator*(vector<int> A, int b)
{
    int t = 0;
    vector<int> C;
    for (int i = 0; i < A.size() || t; i++)
    {
        if (i < A.size())
        {
            t += A[i] * b;
        }
        C.push_back(t % 10);
        t /= 10;
    }
    while (C.back() == 0 && C.size() > 1)
    {
        C.pop_back();
    }
    return C;
}

signed main(void)
{
    std::ios::sync_with_stdio(false);

    string a;
    int b;
    vector<int> A;

    cin >> a >> b;
    for (int i = a.size() - 1; i >= 0; i--)
    {
        A.push_back(a[i] - '0');
    }

    vector<int> C = A * b;
    for (int i = C.size() - 1; i >= 0; i--)
    {
        cout << C[i];
    }
    cout << endl;
    return 0;
}