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Atcoder Beginner Contest 337(A ~ E + G)
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A - Scoreboard: 暴力 B - Extended ABC: 暴力 C - Lining Up 2: 暴力 D - Cheating Gomoku Narabe: 前缀和 E - Bad Juice: 二进制 G - Tree Inversion:线段树(树状数组)+ 主席树 + 思维
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