diff --git a/task01/src/com/example/task01/Pair.java b/task01/src/com/example/task01/Pair.java
index f6fb603b..0cb9c911 100644
--- a/task01/src/com/example/task01/Pair.java
+++ b/task01/src/com/example/task01/Pair.java
@@ -1,5 +1,44 @@
 package com.example.task01;
 
-public class Pair {
-    // TODO напишите реализацию
+import java.util.Objects;
+import java.util.function.BiConsumer;
+
+public class Pair<K, V> {
+   K first;
+   V second;
+
+   K getFirst(){
+       return first;
+   }
+   V getSecond(){
+       return second;
+   }
+
+    private Pair(K first, V second) {
+        this.first = first;
+        this.second = second;
+    }
+
+    public static <K, V> Pair<K,V> of(K first, V second){
+        return new Pair<>(first, second);
+    }
+
+    public void ifPresent(BiConsumer<? super K,? super V> action) {
+        if (first != null && second != null)
+            action.accept(first, second);
+    }
+
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Pair<?, ?> pair = (Pair<?, ?>) o;
+
+        return Objects.equals(first, pair.first) &&
+                Objects.equals(second, pair.second);
+    }
+
+    public int hashCode() {
+        return Objects.hash(first, second);
+    }
 }
diff --git a/task01/src/com/example/task01/Task01Main.java b/task01/src/com/example/task01/Task01Main.java
index 54dde94f..510e3abb 100644
--- a/task01/src/com/example/task01/Task01Main.java
+++ b/task01/src/com/example/task01/Task01Main.java
@@ -5,10 +5,6 @@
 
 public class Task01Main {
     public static void main(String[] args) throws IOException {
-
-        // TODO С корректно реализованным классом Pair должен компилироваться и успешно работать следующий код:
-
-        /*
         Pair<Integer, String> pair = Pair.of(1, "hello");
         Integer i = pair.getFirst(); // 1
         String s = pair.getSecond(); // "hello"
@@ -21,7 +17,6 @@ public static void main(String[] args) throws IOException {
         Pair<Integer, String> pair2 = Pair.of(1, "hello");
         boolean mustBeTrue = pair.equals(pair2); // true!
         boolean mustAlsoBeTrue = pair.hashCode() == pair2.hashCode(); // true!
-        */
 
     }
 
diff --git a/task02/src/com/example/task02/SavedList.java b/task02/src/com/example/task02/SavedList.java
index 6b3a037d..5ab73ea2 100644
--- a/task02/src/com/example/task02/SavedList.java
+++ b/task02/src/com/example/task02/SavedList.java
@@ -1,35 +1,66 @@
 package com.example.task02;
 
 import java.io.File;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.nio.file.Files;
 import java.util.AbstractList;
+import java.util.ArrayList;
+import java.util.List;
 
 public class SavedList<E extends Serializable> extends AbstractList<E> {
 
+    File file;
+    List<E> savedList = new ArrayList<>();;
+
     public SavedList(File file) {
+        if (file.exists()){
+            try (ObjectInputStream objectInputStream = new ObjectInputStream(Files.newInputStream(file.toPath()))){
+                this.savedList = (List<E>) objectInputStream.readObject();
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        this.file = file;
+    }
+
+    public void writeFile() {
+        try (ObjectOutputStream objectOutputStream = new ObjectOutputStream(Files.newOutputStream(file.toPath()))){
+            objectOutputStream.writeObject(this.savedList);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
     }
 
     @Override
     public E get(int index) {
-        return null;
+        return this.savedList.get(index);
     }
 
     @Override
     public E set(int index, E element) {
-        return null;
+        E result = this.savedList.set(index, element);
+        this.writeFile();
+        return result;
     }
 
     @Override
     public int size() {
-        return 0;
+        return savedList.size();
     }
 
     @Override
     public void add(int index, E element) {
+        savedList.add(index, element);
+        this.writeFile();
     }
 
     @Override
     public E remove(int index) {
-        return null;
+        E result = savedList.remove(index);
+        this.writeFile();
+        return result;
     }
 }
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
index 7f255e98..163e5f99 100644
--- a/task03/src/com/example/task03/Task03Main.java
+++ b/task03/src/com/example/task03/Task03Main.java
@@ -1,11 +1,9 @@
 package com.example.task03;
 
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
+import java.io.*;
 import java.nio.charset.Charset;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
+import java.util.stream.Collectors;
 
 public class Task03Main {
 
@@ -15,10 +13,29 @@ public static void main(String[] args) throws IOException {
         for (Set<String> anagram : anagrams) {
             System.out.println(anagram);
         }
-
     }
 
     public static List<Set<String>> findAnagrams(InputStream inputStream, Charset charset) {
-        return null;
+        Map<String, Set<String>> anagramMap = new TreeMap<>();
+
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, charset))){
+            List<String> strings = reader.lines()
+                    .map(String::toLowerCase)
+                    .filter(x -> x.chars().allMatch(c -> c >= 'а' && c <= 'я') && x.length() >= 3)
+                    .collect(Collectors.toList());
+            for (String string : strings) {
+                char[] stringChars = string.toCharArray();
+                Arrays.sort(stringChars);
+                String key = new String(stringChars);
+                anagramMap.computeIfAbsent(key, set -> new TreeSet<>()).add(string);
+            }
+        } catch (IOException e) {
+            System.err.println("Caught IO exception");
+        }
+
+        return anagramMap.values()
+                .stream()
+                .filter(set -> set.size() >= 2)
+                .collect(Collectors.toList());
     }
 }