diff --git a/otus-16/src/otus_16/homework.clj b/otus-16/src/otus_16/homework.clj
index a54c2bf..363a74d 100644
--- a/otus-16/src/otus_16/homework.clj
+++ b/otus-16/src/otus_16/homework.clj
@@ -1,21 +1,114 @@
-(ns otus-16.homework)
+(ns otus-16.homework
+  (:require
+   [clojure.java.io :as io]
+   [clojure.string :as str]
+   [clojure.core.reducers :as r]))
 
+(def log-regex
+  #"^([\d+.]+) (\S+) (\S+) (\[[\w+/]+:[\w+:]+ \+\d+\]) \"(.+?)\" (\d{3}) (\d+) \"([^\"]+)\" \"(.+?)\"")
 
+(defn parse-log
+  [^String log]
+  (let [[_ ip _ user-name date-time request response size referer user-agent] (re-find log-regex log)]
+    {:ip ip
+     :user-name user-name
+     :date-time date-time
+     :request request
+     :response response
+     :size size
+     :referer referer
+     :user-agent user-agent}))
 
-(defn solution [& {:keys [url referrer]
-                   :or   {url :all referrer :all}}]
-  (println "doing something")
-  {:total-bytes      12345
-   ;; если указан параметр url, то в хэш-мапе будет только одно значение
-   :bytes-by-url     {"some-url" 12345}
-   ;; если указан параметр referrer, то в хэш-мапе будет только одно значение
-   :urls-by-referrer {"some-referrer" 12345}})
+(defn get-logs-paths
+  [dir-path]
+  (->> (io/as-file dir-path)
+       (file-seq)
+       (filter #(.isFile %))))
 
+(defn read-logs
+  [logs]
+  (map #(io/reader %) logs))
 
+(defn ->url [log]
+  {:pre [(contains? log :request)]}
+  (let [request (-> log :request)]
+    (when request
+      (-> request
+         (str/split #" ")
+         second))))
+
+(defn filter-by-url
+  [url logs]
+  (if (= url :all)
+    logs
+    (r/filter #(= url (->url %)) logs)))
+
+(comment
+  (r/fold str (filter-by-url "test" [{:request "test"} {:request "test2"} {:request "test"}])))
+
+(defn ->referer [log]
+  {:pre [(contains? log :referer)]}
+  (-> log :referer))
+
+(defn filter-by-referer
+  [referer logs]
+  (if (= referer :all)
+    logs
+    (r/filter #(= referer (->referer %)) logs)))
+
+(defn close-logs
+  [logs]
+  (map #(.close %) logs))
+
+(defn parse-int-safe
+  [^String s]
+  (try
+    (Integer/parseInt s)
+    (catch Exception _
+      0)))
+
+(defn sum-size
+  [log-file]
+  (->> log-file
+       (r/map #(parse-int-safe (:size %)))
+       (r/fold +)))
+
+(defn process-partition
+  [logs {:keys [url referrer]}]
+  (->> logs
+       (r/map parse-log)
+       (filter-by-url url)
+       (filter-by-referer referrer)))
+
+(defn sum-partition
+  [partition]
+  (reduce #(+ %1 (sum-size %2))
+          0
+          partition))
+
+(defn process-log
+  [log-file filter-params]
+  (->> log-file
+       (line-seq)
+       (partition-all 5000)
+       (pmap #(process-partition % filter-params))
+       (sum-partition)))
+
+(defn solution
+  [& {:keys [url referrer]
+      :or   {url :all referrer :all}}]
+  (let [logs (-> "./logs"
+                 get-logs-paths
+                 read-logs)]
+    (->> logs
+         (pmap #(process-log % {:url url :referrer referrer}))
+         (reduce +)
+         (println "Bytes:"))
+    (close-logs logs)))
 
 (comment
  ;; возможные вызовы функции
- (solution)
- (solution :url "some-url")
- (solution :referrer "some-referrer")
- (solution :url "some-url" :referrer "some-referrer"))
+  (time (solution))
+  (time (solution :url "/rss/"))
+  (solution :referrer "some-referrer")
+  (solution :url "some-url" :referrer "some-referrer"))
diff --git a/otus-16/test/otus_16/homework_test.clj b/otus-16/test/otus_16/homework_test.clj
index ed5db27..3eff5a9 100644
--- a/otus-16/test/otus_16/homework_test.clj
+++ b/otus-16/test/otus_16/homework_test.clj
@@ -1,6 +1,20 @@
 (ns otus-16.homework-test
   (:require [clojure.test :refer :all]
-            [otus-16.core :refer :all]))
+            [otus-16.homework :as sut]))
 
 
+(def stub-row "66.249.68.12 - - [20/Sep/2020:22:11:20 +0000] \"GET /%D0%BC%D0%B0%D0%BB%D0%B5%D0%BD%D1%8C%D0%BA%D0%B8%D0%B9-%D0%BC%D0%B0%D0%BB%D1%8C%D1%87%D0%B8%D0%BA-%D0%BF%D0%BE-%D0%B8%D0%BC%D0%B5%D0%BD%D0%B8-%D0%9D%D1%83%D1%80%D0%B1%D0%B5%D0%BA-%D0%B6%D0%B8%D0%BB-%D0%B2-%D0%BD%D0%B5%D0%B1%D0%BE%D0%BB%D1%8C%D1%88%D0%BE%D0%B9/?p=2 HTTP/1.1\" 304 0 \"-\" \"Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.110 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)\" \"-\"")
 
+(deftest parse-log-test
+  (testing "parse-log"
+    (is (= {:ip "66.249.68.12",
+           :user-name "-",
+           :date-time "[20/Sep/2020:22:11:20 +0000]",
+           :request
+           "GET /%D0%BC%D0%B0%D0%BB%D0%B5%D0%BD%D1%8C%D0%BA%D0%B8%D0%B9-%D0%BC%D0%B0%D0%BB%D1%8C%D1%87%D0%B8%D0%BA-%D0%BF%D0%BE-%D0%B8%D0%BC%D0%B5%D0%BD%D0%B8-%D0%9D%D1%83%D1%80%D0%B1%D0%B5%D0%BA-%D0%B6%D0%B8%D0%BB-%D0%B2-%D0%BD%D0%B5%D0%B1%D0%BE%D0%BB%D1%8C%D1%88%D0%BE%D0%B9/?p=2 HTTP/1.1",
+           :response "304",
+           :size "0",
+           :referer "-",
+           :user-agent
+           "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.110 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"}
+           (sut/parse-log stub-row)))))