diff --git a/task01/src/com/example/task01/Pair.java b/task01/src/com/example/task01/Pair.java
index f6fb603b..329afdbd 100644
--- a/task01/src/com/example/task01/Pair.java
+++ b/task01/src/com/example/task01/Pair.java
@@ -1,5 +1,47 @@
 package com.example.task01;
 
-public class Pair {
+import java.util.Objects;
+import java.util.function.BiConsumer;
+
+public class Pair < T, U>{
     // TODO напишите реализацию
+    private final T first;
+    private final U second;
+
+    private Pair(T first, U second) {
+        this.first = first;
+        this.second = second;
+    }
+
+    public T getFirst() {
+        return first;
+    }
+
+    public U getSecond() {
+        return second;
+    }
+
+    public static <T, U> Pair<T, U> of(T first, U second) {
+        return new Pair<>(first, second);
+    }
+
+    public void ifPresent(BiConsumer<? super T, ? super U> action) {
+        if (first != null && second != null) {
+            action.accept(first, second);
+        }
+    }
+
+    @Override
+    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);
+    }
+
+    @Override
+    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..e4d36b53 100644
--- a/task01/src/com/example/task01/Task01Main.java
+++ b/task01/src/com/example/task01/Task01Main.java
@@ -8,7 +8,7 @@ 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 +21,7 @@ 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..fd94b266 100644
--- a/task02/src/com/example/task02/SavedList.java
+++ b/task02/src/com/example/task02/SavedList.java
@@ -2,34 +2,65 @@
 
 import java.io.File;
 import java.io.Serializable;
+import java.nio.file.Files;
 import java.util.AbstractList;
+import java.io.*;
+import java.util.ArrayList;
+import java.util.List;
 
 public class SavedList<E extends Serializable> extends AbstractList<E> {
 
+    private final File file;
+    private final List<E> list = new ArrayList<>();
+
     public SavedList(File file) {
+        this.file = file;
+        if (file.exists()) {
+            try (ObjectInputStream in = new ObjectInputStream(Files.newInputStream(file.toPath()))) {
+                @SuppressWarnings("unchecked")
+                List<E> loaded = (List<E>) in.readObject();
+                list.addAll(loaded);
+            } catch (IOException | ClassNotFoundException e) {
+                throw new RuntimeException("Error downloading data from a file", e);
+            }
+        }
     }
 
     @Override
     public E get(int index) {
-        return null;
+        return list.get(index);
     }
 
     @Override
-    public E set(int index, E element) {
-        return null;
+    public int size() {
+        return list.size();
     }
 
     @Override
-    public int size() {
-        return 0;
+    public E set(int index, E element) {
+        E old = list.set(index, element);
+        save();
+        return old;
     }
 
     @Override
     public void add(int index, E element) {
+        list.add(index, element);
+        save();
     }
 
     @Override
     public E remove(int index) {
-        return null;
+        E old = list.remove(index);
+        save();
+        return old;
+    }
+
+    private void save() {
+        try (ObjectOutputStream out = new ObjectOutputStream(Files.newOutputStream(file.toPath()))) {
+            out.writeObject(list);
+        } catch (IOException e) {
+            throw new RuntimeException("Error saving data to file", e);
+        }
     }
 }
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
index 7f255e98..953ac7d0 100644
--- a/task03/src/com/example/task03/Task03Main.java
+++ b/task03/src/com/example/task03/Task03Main.java
@@ -6,6 +6,9 @@
 import java.nio.charset.Charset;
 import java.util.List;
 import java.util.Set;
+import java.io.*;
+import java.util.*;
+import java.util.stream.Collectors;
 
 public class Task03Main {
 
@@ -19,6 +22,27 @@ public static void main(String[] args) throws IOException {
     }
 
     public static List<Set<String>> findAnagrams(InputStream inputStream, Charset charset) {
-        return null;
+        Map<String, TreeSet<String>> groups = new HashMap<>();
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, charset))) {
+            reader.lines()
+                    .map(String::trim)
+                    .map(String::toLowerCase)
+                    .filter(word -> word.length() >= 3)
+                    .filter(word -> word.matches("[а-яё]+"))
+                    .forEach(word -> {
+                        char[] chars = word.toCharArray();
+                        Arrays.sort(chars);
+                        String key = new String(chars);
+                        groups.computeIfAbsent(key, k -> new TreeSet<>()).add(word);
+                    });
+        } catch (IOException e) {
+            return new ArrayList<>();
+        }
+
+        return groups.values().stream()
+                .filter(group -> group.size() >= 2)
+                .sorted(Comparator.comparing(TreeSet::first)) // сортируем по первому слову
+                .collect(Collectors.toList());
     }
+
 }