Fixed a critical error in distance function.

diff --git a/PokemonGo/RocketAPI/ICoordinate.cs b/PokemonGo/RocketAPI/ICoordinate.cs
index 7acfc1c..14c6ae6 100644
--- a/PokemonGo/RocketAPI/ICoordinate.cs
+++ b/PokemonGo/RocketAPI/ICoordinate.cs
@@ -22,7 +22,7 @@ namespace PokemonGo.RocketAPI
             double R = 6371;
             Func<double, double> toRad = x => x * (Math.PI / 180);
             double dLat = toRad(c2.Latitude - c1.Latitude);
-            double dLong = toRad(c2.Latitude - c2.Longitude);
+            double dLong = toRad(c2.Longitude - c2.Longitude);
             double lat1 = toRad(c1.Latitude);
             double lat2 = toRad(c2.Latitude);
             double a = Math.Sin(dLat / 2) * Math.Sin(dLat / 2) +
diff --git a/PokemonGo/RocketAPI/Window/TSP.cs b/PokemonGo/RocketAPI/Window/TSP.cs
index 90482c6..b47c966 100644
--- a/PokemonGo/RocketAPI/Window/TSP.cs
+++ b/PokemonGo/RocketAPI/Window/TSP.cs
@@ -13,6 +13,9 @@ namespace PokemonGo.RocketAPI.Window
         public static IEnumerable<T> getMinimumTour(IEnumerable<T> nodes, Func<T,T,double> distance)
         {
             TSP<T>.distance = distance;
+            if (nodes.Count() < 2)
+                return nodes;
+
             //create an initial tour out of nearest neighbors
             var stops = nodes
                         .Select(i => new Stop(i))