static int largest_triple(int x)
        {
            int resultPerimeter = 0;

            for (int a = 1; a < x; a++)
            {
                for (int b = 1; b < x; b++)
                {
                    double c = Math.Sqrt(Math.Pow(a, 2) + Math.Pow(b, 2));

                    if (c % 1 == 0 && c >= x)
                    {
                        int perimeter = a + b + (int)c;

                        if (resultPerimeter == 0 || resultPerimeter < perimeter)
                        {
                            resultPerimeter = perimeter;
                        }
                    }
                }
            }
            return resultPerimeter;
        }