using System;

using Gw2Sharp;

using System.Linq;

using System.Threading.Tasks;

public class Program

{

    public static async Task Main()

    {

        var client = new Gw2Client();

        var maps = await client.WebApi.V2.Maps.AllAsync();

        double landArea = maps.GroupBy(map => map.ContinentRect)

                                  .Select(mapGroup => {

                                              if (mapGroup.Count() > 1) {

                                                  Console.WriteLine($"{mapGroup.Count()} {string.Join("; ", mapGroup.Select(m => m.Name))}");

                                              }

​

                                              var map = mapGroup.First();

​

                                              double widthInMiles  = map.ContinentRect.Width  * 24 / 63360;

                                              double heightInMiles = map.ContinentRect.Height * 24 / 63360;

                                              return widthInMiles * heightInMiles;

                                          }).Sum();

​

        Console.WriteLine($"\nApproximate area of non-duplicate maps is: {landArea:###.##} mi²");

    }

}