====== References ======
===== Practice =====
  * [[https://open.kattis.com/|Kattis]]

===== Kattis: New Problem Feed =====
{{rss>https://open.kattis.com/rss/new-problems}}

===== Competitive Programming Books =====
  * [[https://cpbook.net/|Competitive Programming Book]], Halim & Halim 2013
  * [[http://www.csc.kth.se/~jsannemo/slask/main.pdf|Principles of Algorithmic Problem Solving]], Sannemo 2017