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Atcoder Beginner Contest 340(A ~ F 讲解)
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A - Arithmetic Progression: 暴力 B - Append:暴力 C - Divide and Divide:记忆化搜索,打表找规律 D - Super Takahashi Bros.:最短路 E - Mancala 2:线段树,逻辑推理 F - S = 1:平面几何,向量,扩展欧几里得 C 题脑子短路了,其实记忆化搜索很好写~~~
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