using System;

public class cal{

public static int add(int a,int b){

return a+b;

}

public static int add(int a,int b,int c){

return a+b+c;

}

}

public class MethodOverloading

{

public static void Main()

{

Console.WriteLine(cal.add(12,23));

Console.WriteLine(cal.add(12,23,15));

  }

  }