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Level 11A
To advance to the next level, you need to solve all problems.
Fenwick tree and multidimensional trees
See the theory on e-maxx.
In the contest below, the problems can also be solved with a segment tree (and some of them have already been in the corresponding contest), but now solve them with a Fenwick tree.
Group operations on trees
See the theory on e-maxx.
The Aho-Korasik algorithm
See the theory on e-maxx.
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