The refence is a webapp/book that recopilate all the algorithms that we have implemented for competitive programming.
You can find all the raw code implementations in this link
We have develop an interactive webpage where you can see a quick explanation of many of the algorithms presented here and snippets of the implementation per se:
We also are writing a book in spanish about the topic.
Así que si sabes español, y quieres entrar a este mundo, ve este libro e introducete en C++ y los principales algoritmos de programacioón competitiva.
Finally, we are developing a new refence for contest like ICPC to check at a glance all the algorithms we have implemented.