diff --git a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/AbstractCompany.cs b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/AbstractCompany.cs
index 302c514..2db825c 100644
--- a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/AbstractCompany.cs
+++ b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/AbstractCompany.cs
@@ -63,9 +63,9 @@ public abstract class AbstractCompany
     /// <param name="company">Компания</param>
     /// <param name="dozer">Добавляемый объект</param>
     /// <returns></returns>
-    public static bool operator +(AbstractCompany company, DrawningDozer dozer)
+    public static int operator +(AbstractCompany company, DrawningDozer dozer)
     {
-        return company._collection?.Insert(dozer) ?? false;
+        return company._collection.Insert(dozer);
     }
 
     /// <summary>
@@ -74,9 +74,9 @@ public abstract class AbstractCompany
     /// <param name="company">Компания</param>
     /// <param name="position">Номер удаляемого объекта</param>
     /// <returns></returns>
-    public static bool operator -(AbstractCompany company, int position)
+    public static DrawningDozer? operator -(AbstractCompany company, int position)
     {
-        return company._collection?.Remove(position) ?? false;
+        return company._collection.Remove(position);
     }
 
     /// <summary>
diff --git a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/Garage.cs b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/Garage.cs
index 1e25e8d..c1131d7 100644
--- a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/Garage.cs
+++ b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/Garage.cs
@@ -31,8 +31,10 @@ public class Garage : AbstractCompany
     {
         int cntVertically = _pictureHeight / _placeSizeHeight; //Колличество мест по вертикали
         int cntHorizontally = _pictureWidth / _placeSizeWidth; //Колличество мест по горизонтали
-        Pen pen = new Pen(Color.FromArgb(185, 140, 0));
-        pen.Width = 3;
+        Pen pen = new(Color.FromArgb(185, 140, 0))
+        {
+            Width = 3
+        };
 
         for (int i = 0; i < cntHorizontally; i++)
         {
@@ -78,7 +80,5 @@ public class Garage : AbstractCompany
                 placeVertically--;
             }
         }
-
-        //throw new NotImplementedException();
     }
 }
diff --git a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/ICollectoinGenericObjects.cs b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/ICollectoinGenericObjects.cs
index be6c0e0..ef584bc 100644
--- a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/ICollectoinGenericObjects.cs
+++ b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/ICollectoinGenericObjects.cs
@@ -28,7 +28,7 @@ public interface ICollectoinGenericObjects<T>
     /// </summary>
     /// <param name="obj">Добавляемый объект</param>
     /// <returns>true - вставка прошла удачно, false - вставка не удалась</returns>
-    bool Insert(T obj);
+    int Insert(T obj);
 
     /// <summary>
     /// Добавление объекта в коллекцию на конкретную позицию
@@ -36,14 +36,14 @@ public interface ICollectoinGenericObjects<T>
     /// <param name="obj">Добавляемый объект</param>
     /// <param name="position">Позиция</param>
     /// <returns>true - вставка прошла удачно, false - вставка не удалась</returns>
-    bool Insert(T obj, int position);
+    int Insert(T obj, int position);
 
     /// <summary>
     /// Удаление объекта из коллекции на конкретной позиции
     /// </summary>
     /// <param name="position">Позиция</param>
     /// <returns></returns>
-    bool Remove(int position);
+    T? Remove(int position);
 
     /// <summary>
     /// Получение объекта по позиции
diff --git a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/MassiveGenericObject.cs b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/MassiveGenericObject.cs
index 22bf179..8a90051 100644
--- a/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/MassiveGenericObject.cs
+++ b/ProjectBulldozer/ProjectBulldozer/CollectionGenericObjects/MassiveGenericObject.cs
@@ -52,7 +52,7 @@ public class MassiveGenericObject<T> : ICollectoinGenericObjects<T>
         }
     }
 
-    public bool Insert(T obj)
+    public int Insert(T obj)
     {
         //Вставка в свободное место набора
         for (int i = 0; i < Count; i++)
@@ -60,19 +60,19 @@ public class MassiveGenericObject<T> : ICollectoinGenericObjects<T>
             if (_collection[i] == null)
             {
                 _collection[i] = obj;
-                return true;
+                return i;
             }
         }
 
-        return false;
+        return -1;
     }
 
-    public bool Insert(T obj, int position)
+    public int Insert(T obj, int position)
     {
         //Проверка позиции
         if ((position < 0) || (position >= Count))
         {
-            return false;
+            return -1;
         }
 
         //Проверка, что элемент массива по этой позиции пустой, если нет, то ищется свободное место после этой
@@ -105,25 +105,26 @@ public class MassiveGenericObject<T> : ICollectoinGenericObjects<T>
 
             if (placed == false)
             {
-                return false;
+                return -1;
             }
         }
 
         //Вставка
         _collection[position] = obj;
-        return true;
+        return position;
     }
 
-    public bool Remove(int position)
+    public T? Remove(int position)
     {
         //Проверка позиции
         if ((position < 0) || (position >= Count) || (_collection[position] == null))
         {
-            return false;
+            return null;
         }
 
         //Удаление объекта из массива, присвоив элементу массива значение null
+        T? elem = _collection[position];
         _collection[position] = null;
-        return true;
+        return elem;
     }
 }
diff --git a/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.Designer.cs b/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.Designer.cs
index a9ff02a..5dad03e 100644
--- a/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.Designer.cs
+++ b/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.Designer.cs
@@ -137,7 +137,7 @@
             comboBoxSelectorCompany.Name = "comboBoxSelectorCompany";
             comboBoxSelectorCompany.Size = new Size(332, 41);
             comboBoxSelectorCompany.TabIndex = 1;
-            comboBoxSelectorCompany.SelectedIndexChanged += comboBoxSelectorCompany_SelectedIndexChanged;
+            comboBoxSelectorCompany.SelectedIndexChanged += ComboBoxSelectorCompany_SelectedIndexChanged;
             // 
             // pictureBox
             // 
diff --git a/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.cs b/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.cs
index 6e42ba8..3c0a7b4 100644
--- a/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.cs
+++ b/ProjectBulldozer/ProjectBulldozer/FormBulldozerCollection.cs
@@ -36,7 +36,7 @@ public partial class FormBulldozerCollection : Form
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
-    private void comboBoxSelectorCompany_SelectedIndexChanged(object sender, EventArgs e)
+    private void ComboBoxSelectorCompany_SelectedIndexChanged(object sender, EventArgs e)
     {
         switch (comboBoxSelectorCompany.Text)
         {
@@ -46,15 +46,6 @@ public partial class FormBulldozerCollection : Form
         }
 
     }
-/*    private void ComboBoxSelectorCompany_SelectedIndexChanget(object sender, EventArgs e)
-    {
-        switch (comboBoxSelectorCompany.Text)
-        {
-            case "Хранилище":
-                _company = new CarSharingService(pictureBox.Width, pictureBox.Height, new MassiveGenericObject<DrawningDozer>());
-                break;
-        }
-    }*/
 
     /// <summary>
     /// Добавление обычного бульдозера
@@ -101,7 +92,7 @@ public partial class FormBulldozerCollection : Form
                 return;
         }
 
-        if (_company + drawningDozer)
+        if (_company + drawningDozer != -1)
         {
             MessageBox.Show("Объект добавлен.");
             pictureBox.Image = _company.Show();
@@ -162,7 +153,7 @@ public partial class FormBulldozerCollection : Form
         }
 
         int pos = Convert.ToInt32(maskedTextBox.Text);
-        if (_company - pos)
+        if (_company - pos != null)
         {
             MessageBox.Show("Объект удалён.");
             pictureBox.Image = _company.Show();