#include <iostream>
#include <cstring>
using namespace std;
int a[100];
int b[100];
int c[100];
char d[100];
char e[100];
int main()
{
cin >> d >> e;
int ld = strlen(d);
int le = strlen(e);
int lc = ld + le;
for (int i = 0; i < ld; i++)
a[ld - i] = d[i] - '0';
for (int i = 0; i < le; i++)
b[le - i] = e[i] - '0';
for (int i = 1; i <= ld; i++)
{
for (int j = 1; j <= le; j++)
{
c[i + j - 1] += a[i] * b[j];
c[i + j] = c[i + j - 1] / 10;
c[i + j - 1] = c[i + j - 1] % 10;
}
}
while (c[lc] == 0)lc--;
for (int i = lc; i > 0; i--)
{
cout << c[i];
}
return 0;
}