In aproape 4 ani de activitate, infoarena a organizat cateva zeci de concursuri/runde online. Fiecare concurs are un format aparte. De la o runda la cinci, de la cateva ore la cateva zile sau chiar o saptamana, de la cateva probleme la 20, concursurile infoarena variaza in amploare, dificultate si popularitate.

h2. Seria preONI

(toc)*{text-align:center} *Concursuri*
* 'preONI':concursuri#preoni
* 'Happy Coding':concursuri#happy
* 'Autumn Warmup':concursuri#autumn
** 'Autumn Warmup 2007':concursuri#autumn2007
** 'Autumn Warmup 2006':concursuri#autumn2006
* 'Summer Challenge':concursuri#summer
** 'Summer Challenge 2007':concursuri#summer2007
** 'Summer Challenge 2006':concursuri#summer2006
* 'Alte concursuri':concursuri#others
 
h2(#preoni). Seria preONI

Concursul _de marca_ infoarena se organizeaza anual si pregateste elevii pentru "Olimpiada Nationala de Informatica":http://olimpiada.info/. Este cel mai popular concurs al nostru.

|* *{'Runda 1':preoni-2004/runda-1}*
* *{'Runda 2':preoni-2004/runda-2}*|

h2. Happy Coding

h2(#happy). Happy Coding

Un concurs infoarena mai neobisnuit. _Happy Coding inseamna programare cu zambetul pe buze, placere si distractie pura!_

* *{'Happy coding 2':happy-coding-2005-2}*
* *{'Happy coding 3 (2006)':happy-coding-2006}*

h2. Autumn Warmup

h2(#autumn). Autumn Warmup

h3. Autumn Warmp 2007 ('pagina concursului':autumn-warmup-2007)

h3(#autumn2007). Autumn Warmp 2007 ('pagina concursului':autumn-warmup-2007)

* *{'Runda 1':autumn-warmup-2007/runda-1}*
* *{'Runda 2':autumn-warmup-2007/runda-2}*
* *{'Runda 3':autumn-warmup-2007/runda-3}*

h3. {'Autumn Warmup 2006':warm-up-2006}

h3(#autumn2007). {'Autumn Warmup 2006':warm-up-2006}

h2. Summer Challenge

h2(#summer). Summer Challenge

O serie noua de concursuri infoarena. Acestea se organizeaza in timpul vacantei de vara pentru cei care nu vor _sa-si iasa din mana_. :)

h3. Summer Challenge 2007 ('pagina concursului':summer-challenge-2007)

h3(#summmer2007). Summer Challenge 2007 ('pagina concursului':summer-challenge-2007)

* *{'Runda 1':summer-challenge-2007/runda-1}*
* *{'Runda 2':summer-challenge-2007/runda-2}*
* *{'Runda 3':summer-challenge-2007/runda-3}*

h3. Summer Challenge 2006

h3(#summer2006). Summer Challenge 2006

!>summer-challenge-unu?logo!

* *{'Runda 2':summer-challenge-2}*
* *{'Runda 3':summer-challenge-3}*

h2. Alte concursuri infoarena

h2(#others). Alte concursuri infoarena

* *{'Junior Challenge 2007':junior-challenge}*
* *{'Winter Challenge':winter-challenge-1}*