private static void Main()
{
var distances = new BiDictionary <string, string, int>();
distances.Add("Sofia", "Varna", 443);
distances.Add("Sofia", "Varna", 468);
distances.Add("Sofia", "Varna", 490);
distances.Add("Sofia", "Plovdiv", 145);
distances.Add("Sofia", "Bourgas", 383);
distances.Add("Plovdiv", "Bourgas", 253);
distances.Add("Plovdiv", "Bourgas", 292);
var distancesFromSofia = distances.FindByKey1("Sofia");
PrintDistances(distancesFromSofia);
var distancesToBourgas = distances.FindByKey2("Bourgas");
PrintDistances(distancesToBourgas);
var distancesPlovdivBourgas = distances.Find("Plovdiv", "Bourgas");
PrintDistances(distancesPlovdivBourgas);
var distancesRousseVarna = distances.Find("Rousse", "Varna");
PrintDistances(distancesRousseVarna);
var distancesSofiaVarna = distances.Find("Sofia", "Varna");
PrintDistances(distancesSofiaVarna);
Console.WriteLine(distances.Remove("Sofia", "Varna"));
var distancesFromSofiaAgain = distances.FindByKey1("Sofia");
PrintDistances(distancesFromSofiaAgain);
var distancesToVarna = distances.FindByKey2("Varna");
PrintDistances(distancesToVarna);
var distancesSofiaVarnaAgain = distances.Find("Sofia", "Varna");
PrintDistances(distancesSofiaVarnaAgain);
Console.WriteLine(distances.Remove("Sofia", "Lovech"));
}
static void Main()
{
var distances = new BiDictionary <string, string, int>();
distances.Add("Sofia", "Varna", 443);
distances.Add("Sofia", "Varna", 468);
distances.Add("Sofia", "Varna", 490);
distances.Add("Sofia", "Plovdiv", 145);
distances.Add("Sofia", "Bourgas", 383);
distances.Add("Plovdiv", "Bourgas", 253);
distances.Add("Plovdiv", "Bourgas", 292);
var distancesFromSofia = distances.FindByKey1("Sofia"); // [443, 468, 490, 145, 383]
var distancesToBourgas = distances.FindByKey2("Bourgas"); // [383, 253, 292]
var distancesPlovdivBourgas = distances.Find("Plovdiv", "Bourgas"); // [253, 292]
var distancesRousseVarna = distances.Find("Rousse", "Varna"); // []
var distancesSofiaVarna = distances.Find("Sofia", "Varna"); // [443, 468, 490]
var remove = distances.Remove("Sofia", "Varna"); // true
var distancesFromSofiaAgain = distances.FindByKey1("Sofia"); // [145, 383]
var distancesToVarna = distances.FindByKey2("Varna"); // []
var distancesSofiaVarnaAgain = distances.Find("Sofia", "Varna"); // []
Console.WriteLine(string.Join(", ", distancesFromSofia));
Console.WriteLine(string.Join(", ", distancesToBourgas));
Console.WriteLine(string.Join(", ", distancesPlovdivBourgas));
Console.WriteLine(string.Join(", ", distancesRousseVarna));
Console.WriteLine(string.Join(", ", distancesSofiaVarna));
Console.WriteLine(remove);
Console.WriteLine(string.Join(", ", distancesFromSofiaAgain));
Console.WriteLine(string.Join(", ", distancesToVarna));
Console.WriteLine(string.Join(", ", distancesSofiaVarnaAgain));
}