#include <iostream>
#include <cstring>
using namespace std;

int main()
{
	char a2[1001],b2[1001];
	int a[1001],b[1001],s,ss,s3,x,c[10001];
	cin >> a2;
	cin >> b2;
	s = strlen(a2);
	ss = strlen(b2);
	
	for(int i=0;i<=s-1;i++)
		a[s-i] = a2[i] - '0';
	for(int i=0;i<=ss-1;i++)
		b[ss-i] = b2[i] - '0';
	for(int i=1;i<=s;i++)
	{
		x = 0;
		for(int j=1;j<=ss;j++)
		{
			c[i+j-1] = a[i] * b[j]+x+c[i+j-1];
			x = c[i+j-1]/10;
			c[i+j-1] %= 10;
		}
		c[i+ss] = x;
	}
	s3 = s+ss;
	while(c[s3] == 0 && s3 > 1)
		s3--;
	for(int i=s3;i>=1;i--)
		cout << c[i];

	return 0;
}