* Havel-Hakimi
** Probleme: 'grade':problema/grade
* Compresia grafurilor

** Probleme: 'centrale':problema/centrale, 'substring-restrictions':https://csacademy.com/contest/archive/#task/substring-restrictions/ , 'field-activation':https://csacademy.com/contest/archive/#task/field-activation/ , 'legacy':http://codeforces.com/contest/786/problem/B, 'Apple Market':https://naipc17.kattis.com/problems/naipc17.applemarket

** Probleme: 'centrale':problema/centrale, 'substring-restrictions':https://csacademy.com/contest/archive/#task/substring-restrictions/ , 'field-activation':https://csacademy.com/contest/archive/#task/field-activation/ , 'legacy':http://codeforces.com/contest/786/problem/B

* Clica maxima
* 'Cactus graf':https://en.wikipedia.org/wiki/Cactus_graph
** Probleme: 'special-mvc':https://csacademy.com/contest/archive/#task/special-mvc/