static void Main(string[] args)
{
string s = Console.ReadLine();
int x, y;
x = int.Parse(s); y = int.Parse(s);
point a = new point(x, y);
s = Console.ReadLine();
x = int.Parse(s); y = int.Parse(s);
point b = new point(x, y);
a = a + b;
Console.WriteLine('(' + a.x + ", " + a.y + ')');
}
static void Main(string[] args)
{
string[] s = Console.ReadLine().Split();
int x, y;
x = Convert.ToInt32(s[0]); y = Convert.ToInt32(s[1]);
point a = new point(x, y);
s = Console.ReadLine().Split();
x = Convert.ToInt32(s[0]); y = Convert.ToInt32(s[1]);
point b = new point(x, y);
a = a + b;
Console.WriteLine("(" + a.x + ", " + a.y + ")");
Console.WriteLine("Hello world!");
Console.ReadKey();
}
