Baoshuo f50c87b73c B - Election ... https://atcoder.jp/contests/abc231/submissions/27821390		2021-12-11 20:06:23 +08:00
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A	A - Water Pressure	2021-12-11 20:02:56 +08:00
B	B - Election	2021-12-11 20:06:23 +08:00