using System.Collections.Generic;
enum ResourceType {Gas, Coal};
public static void Main()
Dictionary<ResourceType, int> resourcesDict =
new Dictionary<ResourceType, int>()
Console.WriteLine("Gas: " + resourcesDict[ResourceType.Gas]);
Console.WriteLine("Coal before updating val: " + resourcesDict[ResourceType.Coal]);
resourcesDict[ResourceType.Coal] = 999;
Console.WriteLine("Coal after updating val: " + resourcesDict[ResourceType.Coal]);