#include <iostream>

#include <vector>

#include <string>

#include <algorithm>

using namespace std;



void convert(vector<int> &x,const string &str)

{

     for(int i=str.length()-1;i>=0;--i)

             x.push_back(str[i]-'0');

}



void print(const vector<int> &x)

{

     int i=x.size()-1;

     while(x[i]==0)

         i--;

     if(i==-1)

              cout<<0;

     for(;i>=0;--i)

             cout<<x[i];

     cout<<endl;

}



void carry(vector<int> &a)

{

     int size=a.size();

     for(int i=0;i<size-1;++i)

     {

             a[i+1]+=a[i]/10;

             a[i]%=10;

     }

     while(a[a.size()-1]>9)

     {

           a.push_back(a[a.size()-1]/10);

           a[a.size()-2]%=10;

     }

}



void operator += (vector<int> &a,vector<int> &b)

{

     unsigned size=max(a.size(),b.size());

     while(a.size()<size)

          a.push_back(0);

     while(b.size()<size)

          b.push_back(0);

     for(int i=0;i<size;++i)

             a[i]+=b[i];

     carry(a);

}



void operator *= (vector<int> &a,int x)

{

     for(int i=0;i<a.size();++i)

             a[i]*=x;

     carry(a);

}



vector<int> operator * (vector<int> &a,vector<int> &b)

{

            vector<int> ans;

            int zeros=0;

            for(int i=0;i<b.size();++i,++zeros)

            {

                    vector<int> x=a;

                    x*=b[i];

                    vector<int> y;

                    for(int j=0;j<zeros;++j)

                            y.push_back(0);

                    for(int j=0;j<x.size();++j)

                            y.push_back(x[j]);

                    ans+=y;

            }

            return ans;

}





int main()

{

    string a,b;

    getline(cin,a);

    getline(cin,b);

    vector<int> num1,num2;

    convert(num1,a);

    convert(num2,b);

    print(num1*num2);

    return 0;

}