diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f318e6c..ba68c03 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -12,6 +12,31 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Activities"
-        tools:targetApi="31" />
+        tools:targetApi="31">
+        <activity
+            android:name=".ActivityD"
+            android:taskAffinity="@string/second_stack_for_activities"
+            android:exported="false"
+            android:launchMode="singleTask"
+            />
+        <activity
+            android:name=".ActivityC"
+            android:taskAffinity="@string/second_stack_for_activities"
+            android:exported="false" />
+        <activity
+            android:name=".ActivityB"
+            android:taskAffinity="@string/second_stack_for_activities"
+            android:exported="false" />
+        <activity
+            android:name=".ActivityA"
+            android:exported="true"
+            android:launchMode="singleTop">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityA.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityA.kt
new file mode 100644
index 0000000..6f0898e
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityA.kt
@@ -0,0 +1,58 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.util.Log
+import android.widget.Button
+
+class ActivityA : AppCompatActivity() {
+
+    lateinit var button: Button
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_a)
+
+        button = findViewById(R.id.buttonA)
+        button.setOnClickListener{
+            Log.d((ActivityA::class.java).toString(),"click on button" )
+            val intent = Intent(this, ActivityB::class.java)
+            startActivity(intent)
+        }
+        Log.d("log ActivityA", "onCreate")
+    }
+    override fun onStart() {
+        super.onStart()
+        Log.d("log ActivityA", "onStart")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        Log.d("log ActivityA", "onRestart")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.d("log ActivityA", "onResume")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        Log.d("log ActivityA", "onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        Log.d("log ActivityA", "onStop")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Log.d("log ActivityA", "onDestroy")
+    }
+
+    override fun onNewIntent(intent: Intent?) {
+        super.onNewIntent(intent)
+        Log.d("log ActivityA", "onNewIntent")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityB.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityB.kt
new file mode 100644
index 0000000..b8c2fc6
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityB.kt
@@ -0,0 +1,21 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+
+class ActivityB : AppCompatActivity() {
+
+    private lateinit var button: Button
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_b)
+
+        button = findViewById(R.id.buttonB)
+        button.setOnClickListener{
+            val intent = Intent(this, ActivityC::class.java)
+            startActivity(intent)
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityC.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityC.kt
new file mode 100644
index 0000000..bb5e9a4
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityC.kt
@@ -0,0 +1,34 @@
+package otus.gpb.homework.activities
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Button
+
+class ActivityC : AppCompatActivity() {
+
+    private lateinit var button1: Button
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_c)
+
+        button1 = findViewById(R.id.openActivityD)
+        button1.setOnClickListener{
+            val intent = Intent(this, ActivityD::class.java)
+            startActivity(intent)
+        }
+
+        findViewById<Button>(R.id.openActivityA).setOnClickListener{
+            val intent = Intent(this, ActivityA::class.java)
+            startActivity(intent)
+        }
+
+        findViewById<Button>(R.id.closeActivityC).setOnClickListener{
+            finish()
+        }
+
+        findViewById<Button>(R.id.closeStack).setOnClickListener{
+            finishAffinity()
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/activities/ActivityD.kt b/app/src/main/java/otus/gpb/homework/activities/ActivityD.kt
new file mode 100644
index 0000000..1a857d9
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/activities/ActivityD.kt
@@ -0,0 +1,11 @@
+package otus.gpb.homework.activities
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+
+class ActivityD : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_d)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_a.xml b/app/src/main/res/layout/activity_a.xml
new file mode 100644
index 0000000..faa79eb
--- /dev/null
+++ b/app/src/main/res/layout/activity_a.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#f44336"
+    tools:context=".ActivityA">
+
+    <Button
+        android:id="@+id/buttonA"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Open ActivityB"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_b.xml b/app/src/main/res/layout/activity_b.xml
new file mode 100644
index 0000000..f4ee87b
--- /dev/null
+++ b/app/src/main/res/layout/activity_b.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#4caf50"
+    tools:context=".ActivityB">
+
+    <Button
+        android:id="@+id/buttonB"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Open ActivityC"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_c.xml b/app/src/main/res/layout/activity_c.xml
new file mode 100644
index 0000000..ff280fc
--- /dev/null
+++ b/app/src/main/res/layout/activity_c.xml
@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#2196f3"
+    tools:context=".ActivityC">
+
+    <Button
+        android:id="@+id/openActivityD"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Open ActivityD"
+        app:layout_constraintBottom_toTopOf="@+id/openActivityA"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        />
+
+    <Button
+        android:id="@+id/openActivityA"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Open ActivityA"
+        app:layout_constraintBottom_toTopOf="@+id/closeActivityC"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/openActivityD"
+        />
+
+    <Button
+        android:id="@+id/closeActivityC"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Close ActivityC"
+        app:layout_constraintBottom_toTopOf="@+id/closeStack"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/openActivityA"
+        />
+
+    <Button
+        android:id="@+id/closeStack"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Close Stack"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/closeActivityC"
+        />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_d.xml b/app/src/main/res/layout/activity_d.xml
new file mode 100644
index 0000000..c40856b
--- /dev/null
+++ b/app/src/main/res/layout/activity_d.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#ffeb3b"
+    tools:context=".ActivityD">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 08ea3c6..fb4a6c5 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
 <resources>
-    <string name="app_name">Activities</string>
+    <string name="app_name">OTUS. Homework #1</string>
+    <string name="second_stack_for_activities">.second_stack_for_activities</string>
 </resources>
\ No newline at end of file