using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace fractie_rational
{
    class fractie
    {
        protected int nr, nu;// ca sa se poate mosteni
        public fractie()
        {
        }
        public fractie(int a, int b)
        {
            nr = a; nu = b;
        }
        public void citire()
        {
            nr = Int32.Parse(Console.ReadLine());
            nu = Int32.Parse(Console.ReadLine());
        }
        virtual public void afisare()
        {
            Console.Write(nr+"/"+nu);
        }
    }

    class rational : fractie
    {
        public rational()
        {
        }
        public rational(int a, int b):base(a,b)//apeleaza constructorul clasei de baza
        {
            simplificare();
        }
        private int cmmdc(int a, int b)
        { while(a!=b)
            if(a>b) a=a-b;
            else b=b-a;
            return a;
        }
        private void simplificare()
        { 
            int c=cmmdc(nr,nu);
            nr = nr / c;
            nu = nu / c;
        }
        new public void citire()//rescrie metoda pentru citire
        {
            nr = Int32.Parse(Console.ReadLine());
            nu = Int32.Parse(Console.ReadLine());
            simplificare();
        }
    }

    class complex : fractie
    {
        public complex()
        {
        }
        public complex(int a, int b):base(a,b)//apeleaza constructorul clasei de baza
        {
        }
        override public void afisare()
        {
            Console.Write(nr + "+i*" + nu);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            rational r = new rational(4, 8);
            r.afisare();
            rational r1 = new rational();
            r1.citire();
            r1.afisare();
            complex c = new complex(2, 3);
            c.afisare();
            fractie f = new fractie(3, 7);
            f = new complex(4, 5);
            f.afisare();
            Console.ReadKey();
        }
    }
}