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我快被气死了。
June
来一发更新压压惊。
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Articles under the label of 牛棚
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牛棚
【题解】P2878 [USACO07JAN]Protecting the Flowers S
题面点击此处前往原题。约翰留下他的$n\in [1,10^5]\bigcap\mathbb{N^*}$只奶牛上山采木。他离开的时候,她们像往常一样悠闲地在...
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