#include<bits/stdc++.h>
using namespace std;
const int N=1e6+10;
vector<int>mul(vector <int>&A,int b){
    int t=0;
    vector<int>c;
    for(int i=0;i<A.size();i++){
        if(i<A.size())t+=A[i]*b;
        c.push_back(t%10);
        t/=10;
    } 
    if(t!=0)c.push_back(t);
    while(c.size()>1&&c.back()==0)c.pop_back();
    return c;
}
int main(){
    vector<int>A,c;
    string a;
    int b;
    cin>>a>>b;
    for(int i=a.size()-1;i>=0;i--)A.push_back(a[i]-'0');
    c=mul(A,b);
    for(int i=c.size()-1;i>=0;i--){
        cout<<c[i];
    }
}