#include <iostream>

using namespace std;

class Fraction {

public:

    Fraction() : Fraction(1, 1) {}

    Fraction(int num, int denom) : numerator(num), denominator(denom) {}

    Fraction(const Fraction& fract) : numerator(fract.numerator), denominator(fract.denominator) {}

    Fraction& operator+=(const Fraction& other) {
        numerator = numerator * other.denominator + denominator * other.numerator;
        denominator *= other.denominator;
        Reduction();
        return *this;
    }

    Fraction& operator-=(const Fraction& other) {
        numerator = numerator * other.denominator - denominator * other.numerator;
        denominator *= other.denominator;
        Reduction();
        return *this;
    }

    Fraction& operator*=(const Fraction& other) {
        numerator *= other.numerator;
        denominator *= other.denominator;
        Reduction();
        return *this;
    }

    Fraction& operator/=(const Fraction& other) {
        numerator *= other.denominator;
        denominator *= other.numerator;
        Reduction();
        return *this;
    }

    ~Fraction() {}

    void print() {
        std::cout << numerator << " / " << denominator << std::endl;
    }

private:
    void Reduction() {
        int x = numerator;
        int y = denominator;

        while (x != y) {
            if (x > y) {
                x = x - y;
            }
            else {
                y = y - x;
            }
        }
        numerator /= x;
        denominator /= x;
    }

    int numerator;
    int denominator;
};

Fraction& operator+(const Fraction& left, const Fraction& right) {
    Fraction temp = left;
    temp += right;
    return temp;
}


int main() {
    Fraction a(1,2);

    Fraction b(3,4);

    a += b;
    a.print();

    a -= b;
    a.print();

    a *= b;
    a.print();

    a /= b;
    a.print();

    Fraction c = a + b;

    c.print();
}