diff --git a/TMI-practicum/SweepLineEffAlgorithm.cs b/TMI-practicum/SweepLineEffAlgorithm.cs
index f60ca73..ff080e5 100644
--- a/TMI-practicum/SweepLineEffAlgorithm.cs
+++ b/TMI-practicum/SweepLineEffAlgorithm.cs
@@ -29,16 +29,20 @@ namespace TMI_practicum
                 switch (e.Type)
                 {
                     case Event.EventType.Start:
-                        upperActive.Add(new SegmentKey(e.X, e.Circle.Y + e.Circle.R, SegmentKey.SegmentType.Upper, hash), e.Circle);
-                        bottomActive.Add(new SegmentKey(e.X, e.Circle.Y - e.Circle.R, SegmentKey.SegmentType.Bottom, hash),
+                        upperActive.Add(
+                            new SegmentKey(e.X, e.Circle.Y + e.Circle.R, SegmentKey.SegmentType.Upper, hash), e.Circle);
+                        bottomActive.Add(
+                            new SegmentKey(e.X, e.Circle.Y - e.Circle.R, SegmentKey.SegmentType.Bottom, hash),
                             e.Circle);
-                        
+
                         CheckIntersections(upperActive, e, intersections, true);
                         CheckIntersections(bottomActive, e, intersections, false);
                         break;
-                    case Event.EventType.End: 
-                        upperActive.Remove(new SegmentKey(e.X, e.Circle.Y + e.Circle.R, SegmentKey.SegmentType.Upper, hash));
-                        bottomActive.Remove(new SegmentKey(e.X, e.Circle.Y - e.Circle.R, SegmentKey.SegmentType.Bottom, hash));
+                    case Event.EventType.End:
+                        upperActive.Remove(new SegmentKey(e.X, e.Circle.Y + e.Circle.R, SegmentKey.SegmentType.Upper,
+                            hash));
+                        bottomActive.Remove(new SegmentKey(e.X, e.Circle.Y - e.Circle.R, SegmentKey.SegmentType.Bottom,
+                            hash));
                         break;
                     default:
                         throw new ArgumentOutOfRangeException();
@@ -48,16 +52,18 @@ namespace TMI_practicum
 
             return intersections;
         }
-        
-        private static void CheckIntersections(CircleTree<SegmentKey, Circle> active, Event e, Stack<Intersection> intersections, bool upper)
+
+        private static void CheckIntersections(CircleTree<SegmentKey, Circle> active, Event e,
+            Stack<Intersection> intersections, bool upper)
         {
-            
             Circle other = null;
             try
             {
-                 other = upper? active.FindSuccessor(new SegmentKey(e.X, e.Circle.Y, SegmentKey.SegmentType.Upper, e.GetHashCode()))
-                     :
-                 active.FindPredecessor(new SegmentKey(e.X, e.Circle.Y, SegmentKey.SegmentType.Bottom, e.GetHashCode()));
+                other = upper
+                    ? active.FindSuccessor(new SegmentKey(e.X, e.Circle.Y, SegmentKey.SegmentType.Upper,
+                        e.GetHashCode()))
+                    : active.FindPredecessor(new SegmentKey(e.X, e.Circle.Y, SegmentKey.SegmentType.Bottom,
+                        e.GetHashCode()));
             }
             catch (KeyNotFoundException)
             {
@@ -68,7 +74,6 @@ namespace TMI_practicum
                 var intersects = e.Circle.FindIntersections(other);
                 if (intersects != null)
                 {
-
                     foreach (var intersection in intersects)
                     {
                         if (upper && e.Circle.Y == intersection.Y) continue;
@@ -155,7 +160,7 @@ namespace TMI_practicum
             {
                 return _identifier.GetHashCode() ^ _type.GetHashCode();
             }
-            
+
             public enum SegmentType
             {
                 Bottom,
@@ -163,15 +168,17 @@ namespace TMI_practicum
             }
         }
     }
+
     public static class EnumerableExtensions
     {
         public static T MinOrDefault<T>(this IEnumerable<T> sequence)
         {
-            return sequence.Any() ? sequence.Min() : default(T);
+            return sequence.Any() ? sequence.Min() : default;
         }
+
         public static T MaxOrDefault<T>(this IEnumerable<T> sequence)
         {
-            return sequence.Any() ? sequence.Max() : default(T);
+            return sequence.Any() ? sequence.Max() : default;
         }
     }
 }
\ No newline at end of file