原文:2019-2020 ICPC, Asia Jakarta Regional Contest

目錄 Contest Info Solutions A. Copying Homework C. Even Path E. Songwriter G. Performance Review H. Twin Buildings J. Tiling Terrace K. Addition Robot Contest Info Practice Link https: codeforces.com c ...

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2019-2020 ICPC Asia Hong Kong Regional Contest

C. Constructing Ranches 題意: 一棵樹上每個節點有權值\(a_i\),問你有多少路徑滿足以下條件:路徑經過的每個點權作為邊長,可以構成一個多邊形。 解法: 三條邊能構成 ...

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