** 'Cautare binara pe eroare relativa':http://codeforces.com/blog/entry/49189
* 'Sortare':problema/algsort
** Probleme: 'permut':problema/permut, 'sport':problema/sport, 'secv':problema/secv

** 'Quick-sort':https://en.wikipedia.org/wiki/Quicksort

** Quick-sort

*** Probleme: 'invsort':problema/invsort

** 'Merge-sort':https://en.wikipedia.org/wiki/Merge_sort

** Merge-sort

*** Probleme: 'inv':problema/inv

** 'Heap-sort':https://en.wikipedia.org/wiki/Heapsort

** Heap-sort

*** Probleme: 'triangles':problema/triangles
** 'Radix-sort':problema/radixsort
*** Probleme: 'binar':problema/binar, 'specsort':problema/specsort