diff --git a/README.md b/README.md
index f93b6ba..c450077 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # JavaLocalBase
  Simple local base for java problems
+
+https://leetcode.com/explore/challenge/card/july-leetcoding-challenge-2021/608/week-1-july-1st-july-7th/3803/
\ No newline at end of file
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index d08a4f0..4ca87ff 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,46 +1,17 @@
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
+import java.util.*;
 
 public class Main {
-    public static void main(String[] args) throws IOException {
+    public static void main(String[] args)  {
         CodeWorker code = new CodeWorker();
-        code.fileInputReadStream();
-        System.out.println(code.testMethod());
     }
 
 
 }
 
 class CodeWorker {
-    public void fileInputReadStream() throws IOException {
-        FileInputStream in = null;
-        FileOutputStream out = null;
-
-        try {
-            in = new FileInputStream("src/input.txt");
-            out = new FileOutputStream("output.txt");
-
-            int c;
-            while ((c = in.read()) != -1) {
-                out.write(c);
-            }
-        } catch (FileNotFoundException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
-            e.printStackTrace();
-        } finally {
-            if (in != null) {
-                in.close();
-            }
-            if (out != null) {
-                out.close();
-            }
-        }
-    }
 
     public String testMethod() {
         return "method";
     }
 }
+
diff --git a/src/test/java/MainTest.java b/src/test/java/MainTest.java
index 679e36c..82248fe 100644
--- a/src/test/java/MainTest.java
+++ b/src/test/java/MainTest.java
@@ -1,6 +1,8 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
+import java.util.Arrays;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 class MainTest {
diff --git a/target/classes/Main.class b/target/classes/Main.class
index 1a32117..3dd50d2 100644
Binary files a/target/classes/Main.class and b/target/classes/Main.class differ
diff --git a/target/test-classes/MainTest.class b/target/test-classes/MainTest.class
index 9fa99ed..be4b526 100644
Binary files a/target/test-classes/MainTest.class and b/target/test-classes/MainTest.class differ