如果所有顺序都是合法的

P2741 [USACO4.4] 重叠的图像Frame Up

~~但这里不是CF~~
by 逆流之时 @ 2020-03-21 20:58:12


就是就是
by 一架飞机 @ 2021-06-20 11:08:48


对啊,那该怎么办啊?
by Jim_Franklin @ 2023-07-31 11:35:36


感觉应该写个SPJ
by Jim_Franklin @ 2023-07-31 11:36:09


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