#include<iostream>
#include<vector>
using namespace std;
vector<int> mul(vector<int>&a,int b)
{
    vector<int> result;
    int t=0;
    for(int i=0;i<a.size() || t;i++)
    {
        if(i<a.size()) t+=a[i]*b;
        result.push_back(t%10);
        t/=10;
    }
    while(result.size()>1 && result.back()==0 ) result.pop_back();
    return result;
}

int main()
{
    string a;
    vector<int> c,result;
    int b;
    cin>>a>>b;
    for(int i=a.size()-1;i>=0;i--) c.push_back(a[i]-'0');
    result=mul(c,b);
    for(int i=result.size()-1;i>=0;i--) cout<<result[i];
    return 0;

}