#include <iostream>
#include <algorithm>
#include <cstring>
using namespace std;
string sa,sb;
int mres[1666];
int a[555],b[555];

int main()
{
	freopen("mul.in", "r", stdin);
	freopen("mul.out", "w", stdout);
	cin >> sa >> sb;
	int i,j,len;
	
	for(i = 0; i < sa.length(); i++)
		a[sa.length()-i-1] = sa[i] - '0';
	for(j = 0; j < sb.length(); j++)
		b[sb.length()-j-1] = sb[j] - '0';
	
	for(i = 0; i < sa.length(); i++)
		for(j = 0; j < sb.length(); j++)
			mres[i+j] += a[i]*b[j];
	for(i = 0; i < 1100; i++)
		if(mres[i] >= 10)
		{
			mres[i+1] += mres[i]/10;
			mres[i]%= 10;
		} 
	for(len = 1100; len >= 0; len--)
		if(mres[len] != 0)break;
	for(i = len; i >= 0; i--)
		cout << mres[i];
	cout << endl;
	
	return 0;
}