01 2024 档案

摘要：斜率优化前置芝士：

斜 率 = \frac{a_{y} - b_{y}}{a_{x} - b_{x}}

列题：P3195 [HNOI2008] 玩具装箱首先你要知道这是

d p

。其次你要写出暴力来，这里简略一下，设

q_{i}

为前缀和：\(f_i = min(f_j + (q_i - q_j + i

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