AtCoder Beginner Contest 242

C - 1111gal password

https://atcoder.jp/contests/abc242/tasks/abc242_c

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AtCoder Beginner Contest 241（Sponsored by Panasonic）

E - Putting Candies

https://atcoder.jp/contests/abc241/tasks/abc241_e

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AtCoder Beginner Contest 241（Sponsored by Panasonic）

D - Sequence Query

https://atcoder.jp/contests/abc241/tasks/abc241_d

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Denso Create Programming Contest 2022(AtCoder Beginner Contest 239)

E - Subtree K-th Max

https://atcoder.jp/contests/abc239/tasks/abc239_e

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AtCoder Regular Contest 135

C - XOR to All

https://atcoder.jp/contests/arc135/tasks/arc135_c

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AtCoder Beginner Contest 238

E - Range Sums

https://atcoder.jp/contests/abc238/tasks/abc238_e

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