#include <iostream>
using namespace std;

int gcd(int a,int b)
{
    if (b==0) return a;
    else return gcd(b,a%b);
}


class fraction
{
private:
    int divident;
    int divider;

public:
    fraction() {}
    fraction(int up, int down){
        divident = up;
        divider = down;
    }
    void setDivident(int d){
        divident = d;
    }

    void setDivider(int d){
        divider = d;
    }

    int getDivident(){
        return divident;
    }

    int getDivider(){
        return divider;
    }

    fraction operator+ (fraction s){
        fraction result;
        if (this->getDivider() == s.getDivider()){
            result.setDivident(s.getDivident() + this->getDivident());
            result.setDivider(this->getDivider());
            return result;
        }

        int nod = gcd(this->getDivider(), s.getDivider());

        if (nod != 1) {
            int side_a = s.getDivider()/nod;
            int side_b = this->getDivider()/nod;

            result.setDivident(side_a*this->getDivident() + side_b*s.getDivident());
            result.setDivider(side_a*side_b*nod);
        }
        else{
            result.setDivident(s.getDivider()*this->getDivident() + this->getDivider()*s.getDivident());
            result.setDivider(s.getDivider()*this->getDivider());
        }


        return result;
    }

    void operator=(fraction r){
        this->setDivident(r.getDivident());
        this->setDivider(r.getDivider());

    }

    void print(){
        cout << divident << "/" << divider << endl;
    }

};


int main()
{

    fraction a(1,2);
    fraction b(3,4);
    fraction c(1,3);

    fraction d = c+ a;

    d.print();

    return 0;
}