#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
vector<int> mul(vector<int> &A,long long b){
	vector<int> C;
	long long t=0;
	for(int i=0;i<A.size()||t;i++){
		if(i<A.size())t+=A[i]*b;
		C.push_back(t%10);
		t/=10;
	}return C;
}
int main(){
	string a;
	long long b;
	vector<int> A;
  cin>>a>>b;
	for(int i=a.size()-1;i>=0;i--)A.push_back(a[i]-'0');
	vector<int> C;
	C=mul(A,b);
	for(int i=C.size()-1;i>=0;i--)
	printf("%d",C[i]);
}