#include<bits/stdc++.h>
using namespace std;

vector<int> mul(vector<int> a,int b){
    int t=0;
    vector<int> res;
    for(int i=0;i<a.size()||t;i++){
        if(i<a.size()) t+=a[i]*b;
        res.push_back(t%10);
        t/=10;
    }
    return res;
}


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');

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