diff --git a/AirBomber/AirBomber/FormMapWithSetAirBomber.cs b/AirBomber/AirBomber/FormMapWithSetAirBomber.cs
index 3c13999..5344495 100644
--- a/AirBomber/AirBomber/FormMapWithSetAirBomber.cs
+++ b/AirBomber/AirBomber/FormMapWithSetAirBomber.cs
@@ -29,7 +29,7 @@ namespace AirBomber
             if (form.ShowDialog() == DialogResult.OK)
             {
                 DrawningObjectBomber airBomber = new(form.SelectedAirBomber);
-                if (_mapAirBomberCollectionGeneric + airBomber == 1)
+                if (_mapAirBomberCollectionGeneric + airBomber > -1)
                 {
                     MessageBox.Show("Объект добавлен");
                     pictureBox.Image = _mapAirBomberCollectionGeneric.ShowSet();
@@ -52,7 +52,7 @@ namespace AirBomber
                 return;
             }
             int pos = Convert.ToInt32(maskedTextBoxPosition.Text);
-            if (_mapAirBomberCollectionGeneric - pos == 1)
+            if (_mapAirBomberCollectionGeneric - pos != null)
             {
                 MessageBox.Show("Объект удален");
                 pictureBox.Image = _mapAirBomberCollectionGeneric.ShowSet();
diff --git a/AirBomber/AirBomber/MapWithSetAirBomberGeneric.cs b/AirBomber/AirBomber/MapWithSetAirBomberGeneric.cs
index bafc36e..6b7ecbf 100644
--- a/AirBomber/AirBomber/MapWithSetAirBomberGeneric.cs
+++ b/AirBomber/AirBomber/MapWithSetAirBomberGeneric.cs
@@ -32,7 +32,7 @@ namespace AirBomber
             return map._setAirBomber.Insert(airBomber);
         }
 
-        public static int operator -(MapWithSetAirBomberGeneric<T, U> map, int position)
+        public static T operator -(MapWithSetAirBomberGeneric<T, U> map, int position)
         {
             return map._setAirBomber.Remove(position);
         }
diff --git a/AirBomber/AirBomber/SetAirBomberGeneric.cs b/AirBomber/AirBomber/SetAirBomberGeneric.cs
index cb25d74..cb41a83 100644
--- a/AirBomber/AirBomber/SetAirBomberGeneric.cs
+++ b/AirBomber/AirBomber/SetAirBomberGeneric.cs
@@ -27,13 +27,13 @@ namespace AirBomber
         {
             if (position < 0 || position >= Count)
             {
-                return 0;
+                return -1;
             }
             int emptyPos = -1;
             if (_places[position] == null)
             {
                 _places[position] = airBomber;
-                return 1;
+                return position;
             }
             else
             {
@@ -56,22 +56,23 @@ namespace AirBomber
             if (emptyPos != -1)
             {
                 _places[position] = airBomber;
-                return 1;
+                return position;
             }
             else
             {
-                return 0;
+                return -1;
             }
         }
 
-        public int Remove(int position)
+        public T Remove(int position)
         {
             if (position < 0 || position >= Count)
             {
-                return 0;
+                return null;
             }
+            T elem = _places[position];
             _places[position] = null;
-            return 1;
+            return elem;
         }
 
         public T Get(int position)