diff --git a/DIRECTORY.md b/DIRECTORY.md
index 52b97280..a03ce62f 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -1,4 +1,6 @@
 
+## [872](https://github.com/TheAlgorithms/C/blob/master//872.c)
+
 ## Client Server
   * [Client](https://github.com/TheAlgorithms/C/blob/master/client_server/client.c)
   * [Server](https://github.com/TheAlgorithms/C/blob/master/client_server/server.c)