#include<iostream>
#include<string>
#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();i++){
        t+=A[i]*b;
        C.push_back(t%10);
        t/=10;
    }
    if(t)C.push_back(t);
    return C;
}
int main(){
    string a;
    vector<int>A;
    int b;
    cin>>a>>b;
    for(int i=a.length()-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--)printf("%d",C[i]);
}