using System;

​

public class Program

{

    public static void Main()

    {

        // Save variable with file name/location.  In this case, input.txt is in the same folder as the EXE for this program.

        string input = @"input.txt";

​

        // First list stores calorie values in input.txt, second list sums up each paragraph of calorie values.

        List<Int32> caloriesChunk = new List<Int32>();

        List<Int32> elvesCalories = new List<Int32>();

​

​

        if(File.Exists(input))

        {

            StreamReader file = new StreamReader(input);

            string fruitCalorie;

​

            // Read input.txt line by line

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

            {

                // If the program encounters a line that contains anything, add the content to caloriesChunk.

                if(!string.IsNullOrEmpty(fruitCalorie))

                {

                    caloriesChunk.Add(Convert.ToInt32(fruitCalorie));

                }

                // If the program encounters an empty line, sum up saved values into elvesCalories, then clear caloriesChunk to gather the next batch of values.

                else if (string.IsNullOrEmpty(fruitCalorie))

                {

                    elvesCalories.Add(caloriesChunk.Sum());

                    caloriesChunk.Clear();

                }

            }

​

            // Print out which Elf is carrying the most callories, and what value those calories are.

            Console.WriteLine("Elf #{0} is carrying the most calories at a whopping: {1}cal.", elvesCalories.IndexOf(elvesCalories.Max()), elvesCalories.Max());

        }

        else

        {

            Console.WriteLine("Make sure you didn't forget to place input.txt in the same directory as this program.");

        }

    }

}

​