Някой може ли да ми даде насоки. Стигнах до 80/100

using System;
using System.Linq;

namespace _03._Man_o_war
{
    class Program
    {
        static void Main(string[] args)
        {
            double[] pirateShip = Console.ReadLine().Split('>').Select(double.Parse).ToArray();

            double[] warShip = Console.ReadLine().Split('>').Select(double.Parse).ToArray();

            double health = double.Parse(Console.ReadLine());

            string input = string.Empty;

            int sections = 0;

            bool check = true;

            int pirateshipStats = 0;

            int warshipStats = 0;

            while ((input = Console.ReadLine()) != "Retire")
            {
                string[] splited = input.Split(' ');

                string command = splited[0];

                int index = 0;

                int damage = 0;

                int startIndex = 0;

                int endIndex = 0;

                int repairedHealth = 0;

                switch (command)
                {
                    case "Fire":
                         index = int.Parse(splited[1]);

                         damage = int.Parse(splited[2]);

                        if (ValidIndex(index, warShip))
                        {
                            warShip[index] -= damage;

                            if (warShip[index] <= 0)
                            {
                                Console.WriteLine("You won! The enemy ship has sunken.");
                                check = false;
                                break;
                            }
                        }
                        else
                        {
                            continue;
                        }
                        break;
                    case "Defend":
                         startIndex = int.Parse(splited[1]);

                         endIndex = int.Parse(splited[2]);

                         damage = int.Parse(splited[3]);

                        if (ValidIndex(startIndex, pirateShip) && ValidIndex(endIndex, pirateShip))
                        {
                            for (int i = startIndex; i <= endIndex; i++)
                            {
                                pirateShip[i] -= damage;

                                if (pirateShip[i] <= 0)
                                {
                                    Console.WriteLine("You lost! The pirate ship has sunken.");
                                    check = false;
                                    break;
                                }
                            }
                        }
                        else
                        {
                            continue;
                        }
                        break;
                    case "Repair":
                        index = int.Parse(splited[1]);

                        repairedHealth = int.Parse(splited[2]);

                        if (ValidIndex(index, pirateShip))
                        {
                            if (pirateShip[index] + repairedHealth <= health)
                            {
                                pirateShip[index] += repairedHealth;
                            }
                            else
                            {
                                pirateShip[index] = health;
                            }
                        }
                        else
                        {
                            continue;
                        }
                        break;
                    case "Status":
                        foreach (int section in pirateShip)
                        {
                            if (section < health * 0.2)
                            {
                                sections++;
                            }
                        }

                        Console.WriteLine($"{sections} sections need repair.");
                        break;
                }
            }

            if (check)
            {
                foreach (int section in pirateShip)
                {
                    pirateshipStats += section;
                }

                Console.WriteLine($"Pirate ship status: {pirateshipStats}");

                foreach (int section in warShip)
                {
                    warshipStats += section;
                }

                Console.WriteLine($"Warship status: {warshipStats}");
            }

        }
        private static bool ValidIndex(int index, double[] list)
        {
            return index < list.Length && index >= 0;
        }
    }
}