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Articles under the label of 树状数组
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树状数组
「SHOI2007」园丁的烦恼
题目描述题目链接平面上有 $n$ 个点 $(x_i, y_i)$,$m$ 次询问,每次询问为一个矩形内有多少点。 允许离线。其中 $ n,m \leq 500000 $。
RainAir
October 1, 2018
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