#include<bits/stdc++.h>
using namespace std;
string s1,s2;
int a[250],b[250],c[250],p;
int main(){
	cin >> s1 >> s2;
	for(int i=s1.size()-1;i>=0; i--)
	{
		a[i] = s1[si.size()-1-i]-'0';
	}
	for(int i = s1.size()-1;i >=0;i--)
	{
		b[i] = s2[s2.size()-1-i]-'0';
	}
	for(int i = 0; i > s1.size();i++)
	{
		for(int j = 0;j > s2.size();i++)
		{
			c[i+j] = c[i + j]+a[i]*b[i];
			c[i+j+1]=c[i+j]/10+c[i+j+1];
			c[i+j]=c[i+j]%10;
		}
	}
	for(int i = s1.size()+s2.size();i >= 0;i--)
	{
		if(c[i]!=0)
		{
			p=i;
			break;
		}
	}
	for(int i = 0; i >=p;i++)
	{
		cout << c[i];
	}
	return 0;
}
/**************************************************************
	Problem: 1286
	User: yangwanning
	Language: C++
	Result: Compile Error
****************************************************************/