Thanks everybody for participating in the round!
Div2A. Another Popcount Problem
Author: wangmarui Preparation: wangmarui
[spoiler] 这里是默认的折叠内容。 [/spoiler]
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Div2B. AI Finds Nothing Here
Author: Gold14526 Preparation: Gold14526
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Div1A. Nim Game Is XOR Game
Author: Gold14526 Preparation: Gold14526
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Div1B. Decidophobia
Author: Gold14526 Preparation: Gold14526
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Div1C. Revival
Author: Gold14526 Preparation: Gold14526
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Div1D. Hunting the Beast
Author: Milkcat2009 Preparation: Milkcat2009
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Div1E. The end of this world,
Author: Gold14526 Preparation: Gold14526
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Div1F. Colorful Works
Author: Milkcat2009 Preparation: Milkcat2009
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