#include <iostream>
#include <vector>

using namespace std;

vector<int> mul(vector<int> &A, int b)
{
    vector<int> C;
    int t = 0;
    for(int i = 0; i < A.size(); i ++ )
    {
        t = A[i] * b + t;
        C.push_back(t % 10);
        t = t / 10;
    }
    if(t) C.push_back(t);
    while(C.size() > 1 && C.back() == 0) C.pop_back();
    return C;
}
int main()
{
    string a;
    int b;
    cin >> a >> b;
    vector<int> A;
    for(int i = a.size() - 1; i >= 0; i -- ) A.push_back(a[i] - '0');
    auto C = mul(A, b);
    for(int i = C.size() - 1; i >= 0; i -- ) printf("%d", C[i]);
    return 0;
}