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数值算法/人工智能 spoj dtree. Count the number of distinct elements in a given range. Usage is done using fenwick tree
spoj dtree. Count the number of distinct elements in a given range. Usage is done using fenwick trees. Offline algorithm for queries
Linux/Unix编程 spoj CCOST . Usage of a 2 dimensional fenwick tree.Querying (log(n)^2) a 2 dimensional matrix for su
spoj CCOST . Usage of a 2 dimensional fenwick tree.Querying (log(n)^2) a 2 dimensional matrix for sub sum and updating a cell in O(logn)