Update free-programming-books-id.md (#4774)

* Update free-programming-books-id.md

* Update free-programming-books-id.md
Co-authored-by: NSeth <seth@elypia.org>

* Update free-programming-books-id.md

* Update free-programming-books-id.md

* Update free-programming-books-id.md

* Update free-programming-books-id.md
Co-authored-by: NSeth <seth@elypia.org>

free-programming-books-id.md

@@ -12,6 +12,7 @@
 * [Node.js](#nodejs)
 * [NoSQL](#nosql)
 * [Pemrograman Fungsional](#pemrograman-fungsional)
+* [Pemrograman Kompetitif](#pemrograman-kompetitif)
 * [PHP](#php)
 * [Python](#python)
 * [Vue](#vue)
@@ -94,6 +95,11 @@
 * [Pemrograman Fungsional untuk Rakyat Jelata dengan Scalaz](https://leanpub.com/fpmortals-id)
 
 
+### Pemrograman Kompetitif
+
+* [Pemrograman Kompetitif Dasar](https://osn.toki.id/#materi-algo) - William Gozali & Alham Fikri Aji (PDF)
+
+
 ### PHP
 
 * [Membuat Bot Telegram dengan PHP](https://www.slideshare.net/HasanudinHS/ebook-i-membuat-bot-telegram-dengan-php) - Hasanudin H Syafaat - (PDF)