#include<bits/stdc++.h>
using namespace std;
 
void init(int ar[])
{
	for(int i=0;i<1000;i++)
	ar[i] = 0;
}
int main()
{
	int carry,size,ar[1000],tmp;
	string st1,st2;
	char c;
 
	while(!feof(stdin))
	{
		cin>>st1>>st2;
 
		if((st1.size()==1)&&(st1[0]=='0'))
		{
			cout<<0<<endl;
			continue;
		}
 
		if((st2.size()==1)&&(st2[0]=='0'))
		{
			cout<<0<<endl;
			continue;
		}
 
		for(int i=0;i<st1.size()/2;i++)
		{
			c = st1[i];
			st1[i] = st1[st1.size()-i-1];
 
			st1[st1.size()-i-1] = c;
		}
 
		for(int i=0;i<st2.size()/2;i++)
		{
			c = st2[i];
			st2[i] = st2[st2.size()-i-1];
 
			st2[st2.size()-i-1] = c;
		}
 
 
		size=0;
		init(ar);
		for(int i=0;i<st1.size();i++)
		{
			carry = 0;
			for(int j=0;j<st2.size();j++)
			{
				tmp = ((st2[j]-'0')*(st1[i]-'0')) + carry+ar[i+j];
 
				ar[i+j] = tmp%10;
				carry = tmp/10;
 
				if((i+j)==size)
				size++;
			}
 
			if(carry>0)
			ar[size++] = carry;
		}
 
		for(int i=size-1;i>=0;i--)
		cout<<ar[i];
 
		cout<<endl;
	}
 
	return 0;
}