From 658573e2f79f6ce41e6f0297cd0ec61e90312903 Mon Sep 17 00:00:00 2001
From: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Date: Thu, 23 Apr 2020 21:00:06 +0000
Subject: [PATCH] updating DIRECTORY.md

---
 DIRECTORY.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/DIRECTORY.md b/DIRECTORY.md
index 7db9ca18..ec130f6b 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -266,6 +266,8 @@
     * [Sol1](https://github.com/kvedala/C/blob/master/project_euler/Problem%2025/sol1.c)
   * Problem 26
     * [Sol1](https://github.com/kvedala/C/blob/master/project_euler/Problem%2026/sol1.c)
+  * Problem 401
+    * [Sol1](https://github.com/kvedala/C/blob/master/project_euler/Problem%20401/sol1.c)
 
 ## Searching
   * [Binary Search](https://github.com/kvedala/C/blob/master/searching/Binary_Search.c)