public static class A324257
    {
        public static bool IsA324257(long n, long[] distinctFactors)
        {
            bool stat = true;

            string nStr = n.ToString();
            bool[] digitUsed = new bool[nStr.Length];

            foreach (long p in distinctFactors)
            {
                if (!nStr.Contains(p.ToString()))
                {
                    // n doesn't contain this factor
                    stat = false;
                    break;
                }
                else
                {
                    // all digits in n need to be used
                    int index = -1;
                    while ((index = nStr.IndexOf(p.ToString(), index + 1)) > -1)
                    {
                        for (int offset = 0; offset < p.ToString().Length; offset++)
                        {
                            digitUsed[index + offset] = true;
                        }
                    }
                }
            }

            foreach (bool b in digitUsed)
            {
                if (!b)
                {
                    stat = false;
                    break;
                }
            }

            return stat;
        }
    }