static void Main(string[] args)
{
do
{
BigIntegerFraction n = new BigIntegerFraction(Console.ReadLine());
BigIntegerFraction p = new BigIntegerFraction(Console.ReadLine());
RepresentationBI.Write(n + p);
Console.WriteLine();
}while (true);
}
public static void Write(BigIntegerFraction _fraction)
{
Write(_fraction.numerator);
Console.Write("/");
Write(_fraction.denominator);
}