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【USACO2021 Walking Home 】题解

题目 Bessie the cow is trying to walk from her favorite pasture back to her barn. The pasture and fa ...

Wed Dec 22 01:51:00 CST 2021 2 154
【USACO2021 Lonely Photo】题解

题目 Farmer John has recently acquired N new cows (3≤N≤5×105), each of whose breed is either Guernsey ...

Wed Dec 22 01:33:00 CST 2021 2 652

 
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