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

vector <int>mul(vector <int>&A,int b){
vector<int>C;
int t=0;
for(int i=A.size()-1;i>=0;i--){
if(i<A.size())  t+=A[i]*b;
C.push_back(t%10);
t/=10;// 相当于进位;
}
return C;
}

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');
auto C=mul(A,b);
for(int i=C.size()-1;i>=0;i--)  printf("%d",C[i]);
}