Mengubah dictionary

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

class Program
{
    public static void UpdateInventory(Dictionary<string, int> inventory, string item, int quantity)
    {
        // Tulis kodemu di sini
        
        // Cetak inventory yang telah diperbarui
        // Jangan hapus ini
        foreach (KeyValuePair<string, int> entry in inventory)
        {
            Console.WriteLine($"{entry.Key}: {entry.Value}");
        }
    }
    // Abaikan kode utama, kode ini mengubah string menjadi HashMap
    static void Main(string[] args)
    {
        Dictionary<string, int> inventory = new Dictionary<string, int>();
        
        // Baca baris pertama untuk memeriksa apakah formatnya JSON
        string firstLine = Console.ReadLine();
        
        // Periksa apakah input berformat JSON
        if (firstLine != null && firstLine.StartsWith("{") && firstLine.EndsWith("}"))
        {
            try
            {
                // Proses input JSON untuk inventory awal
                string jsonContent = firstLine.Substring(1, firstLine.Length - 2);
                
                // Pisahkan berdasarkan koma yang tidak berada di dalam tanda kutip
                string pattern = @",(?=(?:[^""]*""[^""]*"")*[^""]*$)";
                string[] entries = Regex.Split(jsonContent, pattern);
                
                foreach (string entry in entries)
                {
                    // Ambil key dan nilai menggunakan regex
                    Match match = Regex.Match(entry, @"""([^""]+)""\s*:\s*(\d+)");
                    if (match.Success)
                    {
                        string keyMatch = match.Groups[1].Value;
                        int valueMatch = int.Parse(match.Groups[2].Value);
                        inventory.Add(keyMatch, valueMatch);
                    }
                }
                
                // Read the item to update and its quantity
                string updateItemJson = Console.ReadLine();
                // Check if update item is in JSON format with quotes
                Match itemMatch = Regex.Match(updateItemJson, @"""([^""]+)""");
                string updateItem = itemMatch.Success ? itemMatch.Groups[1].Value : updateItemJson;
                
                int updateQuantity = int.Parse(Console.ReadLine());
                
                UpdateInventory(inventory, updateItem, updateQuantity);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error parsing input: {ex.Message}");
            }
        }
        else
        {
            try
            {
                // Process traditional input format
                int initialCount = int.Parse(firstLine);
                for (int i = 0; i < initialCount; i++)
                {
                    string item = Console.ReadLine();
                    int quantity = int.Parse(Console.ReadLine());
                    inventory.Add(item, quantity);
                }
                
                // Read the item to update and its quantity
                string updateItem = Console.ReadLine();
                int updateQuantity = int.Parse(Console.ReadLine());
                
                UpdateInventory(inventory, updateItem, updateQuantity);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error parsing input: {ex.Message}");
            }
        }
    }
}