11. Сумма чисел

public class Program
{
    private static void Main(string[] args)
    {
        int maxValue = 100;
        int minValue = 0;
        int value;
        int sumValue = 0;
        Random random = new Random();
        int firstMultiple = 3;
        int secondMultiple = 5;

        value = random.Next(minValue, maxValue);

        for (int i = 0; i < value; i++)
        {
            if(i % firstMultiple == 0 || i % secondMultiple == 0)
            {
                sumValue += i;
            }
        }

        Console.WriteLine(sumValue);
    }
}