static void Main(string[] args)
{
string text = Console.ReadLine();
string[] s = text.Split(' ');
string[] n1 = s[0].Split('/');
string[] n2 = s[1].Split('/');
int a = int.Parse(n1[0]);
int b = int.Parse(n1[1]);
int c = int.Parse(n2[0]);
int d = int.Parse(n2[1]);
complex c1 = new complex(a, b);
complex c2 = new complex(c, d);
complex sum = c1 + c2;
complex dif = c1 - c2;
complex prod = c1 * c2;
complex div = c1 / c2;
Console.WriteLine(sum);
Console.WriteLine(dif);
Console.WriteLine(prod);
Console.WriteLine(div);
Console.ReadKey();
}
public static void Main(string[] args)
{
complex a = new complex(3, 5);
complex b = new complex(2, 5);
complex n = a + b;
Console.WriteLine(a + "+" + b + "=" + n);
Console.ReadKey();
}
public static complex operator +(complex c1, complex c2)
{
complex n = new complex();
n.y = c2.y * c1.y;
n.x = c1.x * n.y / c1.y + c2.x * n.y / c2.y;
n.Cancel();
return(n);
}