#include<iostream>
#include<sstream>

using namespace std;


int toInt(string x)
{
    stringstream txt;
    int a;

    txt << x;
    txt >> a;

    return a;
}
string toString(int a)
{
    stringstream b;
    string c;

    b << a;
    b >> c;

    return c;
}
unsigned int russianPeasantBinary(unsigned int a, unsigned int b) {
  unsigned int wynik = 0;
  while (b > 0) {
    if (b & 1)
      wynik += a;
    a <<= 1;
    b >>= 1;
  }
  return wynik;
}
int main()
{
    string x;
    string y;
    string ros;
    string ost;
    int poP;
    int pom;
    int a;
    int liczbaRosyjska;
    cin >> x;
    cin >> y;

    int p = x.find(",");

    x = x.erase(p,1);

    a = toInt(x);

    int b;



    int m = y.find(",");

    y = y.erase(m,1);

    b = toInt(y);

    poP = (x.size()- p) + (y.size() - m);

    liczbaRosyjska = russianPeasantBinary(a ,b);

    ros = toString(liczbaRosyjska);
    pom = ros.size() - poP;

    ros.insert(pom ,",");
    cout << ros << endl;

    return 0;
}