using System;
namespace polymor
{
class Program
{
void Sum(int a, int b)
{
Console.WriteLine(a + b);
}
void Sum(int a, int b, int c)
{
Console.WriteLine(a + b + c);
}
void Sum(int a, int b, int c, int d)
{
Console.WriteLine(a + b + c + d);
}
static void Main(string[] args)
{
Program obj = new Program();
obj.Sum(2,3);
obj.Sum(2,3,4);
obj.Sum(2, 3, 4,5);
Console.ReadLine();
}
}
}