#include<bits/stdc++.h>
using namespace std;
multiply (string s, char k) {
int num, carry = 0;
stack <char> res;
for (int i=s.length()-1; i>=0;i--) {
num = carry + (s[i]-'0')*(k- '0');
carry = num/10;
res.push(num%10+ '0');
if (i==0 && num/10>0)
res.push(num/10 + '0');
}
s.clear();
while (!res.empty()) {
s+=res.top();
res.pop();
}
cout<< s;
}
int main() {
string s;
char k;
getline(cin, s);
cin>>k;
multiply (s, k);
}