はい. AtCoder Beginner Contest 138 です A,B,C,D,E の5完でした. 5完!!! パフォーマンスが青手前くらいの水色でした! A - Red or Not B - Resistors in Parallel C - Alchemist D - Ki after_contest 2019-08-21追記 E - Strings of Impurity まとめ…
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