diff --git a/.gitignore b/.gitignore
index bdf8835..6e4d587 100644
--- a/.gitignore
+++ b/.gitignore
@@ -159,5 +159,5 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+.idea/
 
diff --git a/vinichukan/427.md b/vinichukan/427.md
new file mode 100644
index 0000000..e69de29