For more information on Associative Range Query, you may research "segment trees" in the programming contest literature. My implementation is more general than usual; for more information on it, please see my blog post on Codeforces.
For more information on Associative Range Query, you may research "segment trees" in the programming contest literature. My implementation is more general than usual; for more information on it, please see my blog post on Codeforces.