diff --git "a/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_6/Solution.java" "b/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_6/Solution.java"
index 063689d..1b6e770 100644
--- "a/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_6/Solution.java"
+++ "b/src/com/school/faang/hashset/\320\267\320\260\320\264\320\260\321\207\320\260_6/Solution.java"
@@ -1,7 +1,57 @@
 package com.school.faang.hashset.задача_6;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
 public class Solution {
     public static void main(String[] args) {
+        RecommendationEngine recommendationEngine = new RecommendationEngine();
+
+        recommendationEngine.addVideo("A4", "100 km in mile");
+        recommendationEngine.addVideo("Mr.Beast", "Super Strong");
+        recommendationEngine.addVideo("A4", "Who run faster");
+        recommendationEngine.addVideo("A4", "Best boll");
+        recommendationEngine.addVideo("Cook together", "100 best resepiece");
+        recommendationEngine.addVideo("Mr.Beast", "Who broke first");
+
+        Set<String> subscriptions = Set.of("Mr.Beast", "A4", "Cook together");
+        Set<String> watchHistory = Set.of("100 km in mile", "Super Strong", "Who run faster");
+
+        System.out.println(recommendationEngine.generateFeed(subscriptions, watchHistory));
+    }
+}
+
+class RecommendationEngine {
+    private Map<String, Set<String>> videosByChannel;
+
+    public RecommendationEngine() {
+        this.videosByChannel = new HashMap<>();
+    }
+
+    public void addVideo(String channelName, String videoTitle) {
+        if (videosByChannel.containsKey(channelName)) {
+            videosByChannel.get(channelName).add(videoTitle);
+        }else {
+            Set<String> newset = new HashSet<>();
+            newset.add(videoTitle);
+
+            videosByChannel.put(channelName, newset);
+        }
+    }
+
+    public List<String> generateFeed(Set<String> subscriptions, Set<String> watchHistory) {
+        Set<String> recommendations = new HashSet<>();
+
+        for (String channel : subscriptions) {
+            recommendations.addAll(videosByChannel.get(channel));
+        }
+
+        recommendations.removeAll(watchHistory);
 
+        return new ArrayList<>(recommendations);
     }
 }