2798 블랙잭

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

namespace beakjoon
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            List<string> inputStringList = Console.ReadLine().Split(' ').ToList();

            int cardCount = Convert.ToInt32(inputStringList[0]);
            int targetNumber = Convert.ToInt32(inputStringList[1]);

            List<string> cards = Console.ReadLine().Split(' ').ToList();

            int result = GetBlackJackNumber(cardCount, targetNumber, cards);

            Console.Write(result.ToString());
        }

        static int GetBlackJackNumber(int cardCount, int targetNumber, List<string> cards)
        {
            List<Tuple<int, int>> resultTupleList = new List<Tuple<int, int>>();

            for (int i = 0; i < cards.Count - 2; i++)
            {
                for (int j = i + 1; j < cards.Count - 1; j++)
                {
                    for (int k = j + 1; k < cards.Count; k++)
                    {
                        int sum = Int32.Parse(cards[i]) + Int32.Parse(cards[j]) + Int32.Parse(cards[k]);

                        if (targetNumber - sum >= 0) 
                        {
                            resultTupleList.Add(new Tuple<int, int>(targetNumber - sum, sum));
                        }
                    }
                }
            }

            var test = resultTupleList.Min();
            return test.Item2;
        }
    }
}