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ID Problem Show tags Hide tags AC / Tried Difficulty
1988 A198  [USACO08NOV]Light Switching G 19 / 36 4
1997 A199  [USACO08FEB]Hotel G 19 / 35 4
1247 HT1010  月赛题讲解 4 / 17 9
1261 HT1024  桃子买包 0 / 29 10
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