I don't want to register on your website. Sorry This is C# 4.0

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Contest4 {
    class Program {
        static void Main(string[] args) {
            Console.WriteLine("Result = {0}", Contest4(2, 3, 5, 15));
        }
        static long Contest4(long a, long b, long c, long d) {
            var inputs = new[] { a, b, c };
            var result = new List<long>(inputs);
            var counter = 0L;
            var multiple = 0L;
            foreach (var input in inputs) {
                counter = 1L;
                while ((multiple = input * counter++) < d)
                    if (!result.Contains(multiple))
                        result.Add(multiple);
            }
            return result.Sum();
        }
    }
}

Interesting. I'll check this out over the weekend.

omo_to_dun:

No problem. But I can't do anything with your code, since the auto-compiler on that site does everything for me.

@omo_to_dun, , name me a good web host you know won't disappoint(payments in Naira)!

Waitin. . . .

hello guys! Do u know dt others are willing to pay for services u can easily render. Services may include editing of codes, designing logo or any services u thinj people wil love to pay for.
Check out www.1knaira.com where u can buy or sell your online services for naira1,000. Signing up is free

OK what all this!

omo_to_dun:

Hello Nairalanders,

Programming challenges are an easy way to apply your knowledge of a new language or an already perfected language. You can solve this deceptively simple contest:

   Crazy Multiples

if you have the time and the skill.

Once again, I'd like to thank tundebabzy for advertising my site. I had so much traffic in one day that my server almost collapsed.

If I can't put Nigeria on the map, I could assist someone else to do so