Binary indexed tree problem

Revision ru1, by feruz.atamuradov, 2017-11-01 15:09:30

Hi CF community. I found problem tag of binary indexed tree. I have not any ideas. Help me!
TASK
Thanks in advance!

Tags binary indexed tree, fenwick tree, acmp

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ru3 Russian feruz.atamuradov 2017-11-02 15:01:29 2139
ru2 Russian feruz.atamuradov 2017-11-02 14:59:06 1501
ru1 Russian feruz.atamuradov 2017-11-01 15:09:30 266 Первая редакция (опубликовано)