diff --git a/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs b/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs
index 2317b42..47f71e5 100644
--- a/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs
+++ b/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs
@@ -52,7 +52,7 @@ namespace Artilleries
             if (form.ShowDialog() == DialogResult.OK)
             {
                 DrawingObjectArtillery car = new(form.SelectedArtillery);
-                if (_mapArtilleriesCollectionGeneric + car)
+                if (_mapArtilleriesCollectionGeneric + car != -1)
                 {
                     MessageBox.Show("Объект добавлен");
                     pictureBoxArtilleries.Image = _mapArtilleriesCollectionGeneric.ShowSet();
@@ -75,7 +75,7 @@ namespace Artilleries
                 return;
             }
             int pos = Convert.ToInt32(maskedTextBoxPosition.Text);
-            if (_mapArtilleriesCollectionGeneric - pos)
+            if (_mapArtilleriesCollectionGeneric - pos != null)
             {
                 MessageBox.Show("Объект удален");
                 pictureBoxArtilleries.Image = _mapArtilleriesCollectionGeneric.ShowSet();
diff --git a/SelfPropelledArtilleryUnit/MapWithSetArtilleriesGeneric.cs b/SelfPropelledArtilleryUnit/MapWithSetArtilleriesGeneric.cs
index d53c409..4c03bfe 100644
--- a/SelfPropelledArtilleryUnit/MapWithSetArtilleriesGeneric.cs
+++ b/SelfPropelledArtilleryUnit/MapWithSetArtilleriesGeneric.cs
@@ -27,14 +27,14 @@ namespace Artilleries
             _map = map;
         }
 
-        public static bool operator +(MapWithSetArtilleriesGeneric<T, U> map, T artillery)
+        public static int operator +(MapWithSetArtilleriesGeneric<T, U> map, T artillery)
         {
-            return map._setArtilleries.Insert(artillery); // TODO
+            return map._setArtilleries.Insert(artillery);
         }
 
-        public static bool operator -(MapWithSetArtilleriesGeneric<T, U> map, int position)
+        public static T operator -(MapWithSetArtilleriesGeneric<T, U> map, int position)
         {
-            return map._setArtilleries.Remove(position); // TODO
+            return map._setArtilleries.Remove(position);
         }
 
         public Bitmap ShowSet()
diff --git a/SelfPropelledArtilleryUnit/SetArtilleriesGeneric.cs b/SelfPropelledArtilleryUnit/SetArtilleriesGeneric.cs
index 2f87663..35c69f5 100644
--- a/SelfPropelledArtilleryUnit/SetArtilleriesGeneric.cs
+++ b/SelfPropelledArtilleryUnit/SetArtilleriesGeneric.cs
@@ -17,22 +17,22 @@ namespace Artilleries
             _places = new T[count];
         }
 
-        public bool Insert(T artillery)
+        public int Insert(T artillery)
         {
             return Insert(artillery, 0);
         }
 
-        public bool Insert(T artillery, int position)
+        public int Insert(T artillery, int position)
         {
             if (position < 0 || position >= Count)
             {
-                return false;
+                return -1;
             }
 
             if (_places[position] == null)
             {
                 _places[position] = artillery;
-                return true;
+                return position;
             }
 
             int firstNull = -1;
@@ -48,27 +48,29 @@ namespace Artilleries
 
             if (firstNull == -1)
             {
-                return false;
+                return -1;
             }
 
             for (int i = firstNull; i > position; i--)
             {
-                (_places[i], _places[i - 1]) = (_places[i - 1], _places[i]);
+                _places[i] = _places[i - 1];
             }
 
             _places[position] = artillery;
-            return true;
+            return position;
         }
 
-        public bool Remove(int position)
+        public T Remove(int position)
         {
-            if (position < 0 || position >= Count || _places[position] == null)
+            if (position < 0 || position >= Count)
             {
-                return false;
+                return null;
             }
 
+            var result = _places[position];
+
             _places[position] = null;
-            return true;
+            return result;
         }
 
         public T Get(int position)