//idea:  given two fractions.  Add them and display result

//Dennis

#include <iostream>

using namespace std;

int gcd(int a,int b)

{

      if (a<b) return gcd(b,a);

      if (b==0) return a;

      else return gcd(b,a%b);

}

int main()

{

      int a,b,c,d,g;    //vars, gcd

      char o,t;         //operator, temp

      while(cin>>a>>t>>b>>o>>c>>t>>d && (a|b|c|d)!=0)

      {

            int top=a*d+b*c;

            int bottom=b*d;

            int whole=0;

            g=gcd(top,bottom);

            top/=g;

            bottom/=g;

            if (top>=bottom)

            {

                  whole=top/bottom;

                  top%=bottom;

            }

            if (whole>0)

            {

                  cout<<whole;

                  if (bottom>1) cout<<" and ";

            }

            if (bottom>1) cout<<top<<" / "<<bottom;

            cout<<endl;

      }

      cout<<"Zhzyatslya, I did this for YOU!"<<endl;

      return 0;

}

/*

1 / 3 +  4  / 3

1 / 1 +  2  / 3

1 / 3 +  1  / 3

0 / 0 +  0  / 0

*/