Binary Indexed Tree (BIT)

http://vn.spoj.com/problems/NKINV/ - solution - code

http://vn.spoj.com/problems/CRATE/ - solution - code

http://www.spoj.com/problems/RATING/ - vn - solution - code

http://vn.spoj.com/problems/KINV/ - solution - code

http://vn.spoj.com/problems/C11SEQ/ - solution - code

http://vn.spoj.com/problems/KMEDIAN/ - vn - sotution - code

http://vn.spoj.com/problems/NKLUCK/ - sotution - code

http://vn.spoj.com/problems/FOCUS/ - solution - code

http://vn.spoj.com/problems/NKMAXSEQ/ - solution - code

http://vn.spoj.com/problems/NKREZ/ - solution - code

http://vn.spoj.com/problems/MEDIAN/ - solution - code

http://vn.spoj.com/problems/PVOI14_4/ - solution - code

http://www.spoj.com/problems/MATSUM/ - vn - solution - code

http://www.spoj.com/problems/CCOST/ - vn - solution - code

http://vn.spoj.com/problems/KQUERY/ - solution - code

http://vn.spoj.com/problems/DQUERY/ - en - solution - code

http://vn.spoj.com/problems/SWAPB/ - solution

http://vn.spoj.com/problems/SKWLTH/ - solution

http://vn.spoj.com/problems/PLACE/ - solution

http://vn.spoj.com/problems/MCHAOS/ - solution

http://www.spoj.com/problems/INCSEQ/ - code

http://www.spoj.com/problems/INVCNT/ - code

http://www.spoj.com/problems/NICEDAY/ - code