using System;

using System.IO;

​

namespace ConsoleApp40

{

    public class Program

    {

        public static void Main()

        {

            bool[] result = new bool[90];

​

            using (StreamReader file = new StreamReader("lotto.txt"))

            {

                string line;

​

                while ((line = file.ReadLine()) != null)

                {

                    string[] numbers = line.Split(' ');

​

                    for (int i = 0; i < numbers.Length; i++)

                    {

                        int number = int.Parse(numbers[i]);

                        result[number - 1] = true; // number - 1 is needed, because the array indexed as 0..89, but the lottery numbers are between 1..90

                    }

                }

            }

​

            bool isThereAnyNotDrawnNumber = false;

​

            for (int i = 0; i < result.Length; i++)

            {

                if (result[i] == false)

                {

                    isThereAnyNotDrawnNumber = true;

                    break;

                }

            }

​

            if (isThereAnyNotDrawnNumber)

            {

                Console.WriteLine("VOLT");

            }

            else

            {

                Console.WriteLine("NINCS");

            }

        }

    }

}

​