#include<iostream>
#include<vector>
using namespace std;

string a;
int B;

vector<int>A;

vector<int> mul(vector<int>A,int B){
    int t=0;
    vector<int>C;
    for(int i=0;i<A.size()||t;i++){
        if(i<A.size())t+=A[i]*B;
        C.push_back(t%10);
        t=t/10;
    }
    while(C.size()>1&&C.back()==0)C.pop_back();
    return C;
}


int main(){
    cin>>a>>B;
    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;
}