Hi guys! Can someone explain me please, how to use BIT in this problem? http://codeforces.me/problemset/problem/12/D I've seen than some contestants has solved using BIT but I didn't understand how they do. Thanks in advance! :)
12 D — Ball
Hi guys! Can someone explain me please, how to use BIT in this problem? http://codeforces.me/problemset/problem/12/D I've seen than some contestants has solved using BIT but I didn't understand how they do. Thanks in advance! :)
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