#include <map>
#include <vector>
#include <cstdio>
#include <iostream>
#include <cstdlib>
#include <algorithm>
#include <string>
#include <cstring>
#include <time.h>
#include <set>
#include <cmath>
using namespace std;


int main()
{
    string s;
    vector <int> s1, s2, s3;
    cin >> s;
    s1.resize(s.size());
    for (int i = 0; i < s.length(); i++) s1[i] = s[i] - '0';
    cin >> s;
    s2.resize(s.size());
    for (int i = 0; i < s.length(); i++) s2[i] = s[i] - '0';
    reverse(s1.begin(), s1.end());
    reverse(s2.begin(), s2.end());
    s3.resize(s1.size() + s2.size() + 2);
    for (int i = 0; i < s1.size(); i++)
        for (int j = 0; j < s2.size(); j++)
            s3[i + j] += s1[i] * s2[j];
    for (int i = 0; i < s3.size() - 1; i++)
        s3[i + 1] += s3[i] / 10, s3[i] %= 10;
    while (s3.back() == 0 && !s3.empty())
        s3.pop_back();
    for (int i = 0; i < s3.size(); i++)
        cout << s3[s3.size() - i - 1];
    return 0;
}