Winning Numbers

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

namespace WinningNumbers
{
    class WinningNumbers
    {
        static void Main()
        {
            string input = Console.ReadLine();
            char[] inputArray = input.ToLower().ToCharArray();
            int sum = 0;

            foreach (var item in inputArray)
            {
                sum+=Convert.ToInt32(item)-96;
            }

            List<string> collected = new List<string>();

            if (sum > 729)
            {
                Console.WriteLine("No");
                return;
            }
            else
            {
                for (int i = 111; i < 999; i++)
                {
                    int[] tempNum = Array.ConvertAll(i.ToString().ToArray(), x => (int)x - 48);
                    if (tempNum[0] * tempNum[1] * tempNum[2] == sum)
                    {
                        string num = String.Join("", tempNum.Select(p => p.ToString()).ToArray());
                        collected.Add(num);
                    }
                }
            }


            if (collected.Count == 0)
            {
                Console.WriteLine("No");
                return;
            }
            else
            {
                for (int k = 0, i = 0, j = 0; k < collected.Count * collected.Count; k++)
                {
                    if (j == collected.Count)
                    {
                        i++;
                        j = 0;
                        Console.WriteLine(collected[i] + "-" + collected[j]);
                        j++;

                    }
                    else
                    {
                        Console.WriteLine(collected[i] + "-" + collected[j]);
                        j++;

                    }
                }
            }
        }

    }
}