#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() || t; i++){
        if(i < A.size()) t += A[i] * b;
        C.push_back(t % 10);
        t /= 10;
    }

    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--) cout << C[i];

    return 0;
}