包含USACO经典入门题目和比赛题目，题单完善中~~~

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Section 1. USACO23DEC铜组

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Problem Tried AC Difficulty
2077   [USACO23DEC] Candy Cane Feast B 46 7 1
2078   [USACO23DEC] Cowntact Tracing 2 B 9 2 2
2079   [USACO23DEC] Farmer John Actually Farms B 9 2 2
 
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