import java.io.PrintStream;
import java.util.Scanner;
import type.lib.Fraction;

public class AddFractions
{
   public static void main(String[] args)
   {
      PrintStream out = System.out;
      Scanner in = new Scanner(System.in);
      
      out.print("Numerator and denominator of first fraction: ");
      long num = in.nextLong();
      long den = in.nextLong();
      Fraction first = new Fraction(num, den);
      
      out.print("Numerator and denominator of second fraction: ");
      num = in.nextLong();
      den = in.nextLong();
      Fraction second = new Fraction(num, den);
      
      out.printf("%s + %s = ", first, second);
      first.add(second);
      out.printf("%s%n", first);
   }
}