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P5787 二分图 /【模板】线段树分治

@[Winston12321_](/user/396994) 条件里面没说 $x\ne y$ 就有可能相等吧
by ScatteredHope @ 2023-07-10 15:20:11

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@[ScatteredHope](/user/654546) 这算边吗？自环有些特殊，可能更新下题面比较好吧
by Winston12321_ @ 2023-07-10 17:51:46

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@[Winston12321_](/user/396994) 自环当然算边，而且有自环的图不应该一定不是二分图吗
by ScatteredHope @ 2023-07-10 18:20:03

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@[ScatteredHope](/user/654546) 那这篇帖子就当警示后人吧
by Winston12321_ @ 2023-07-10 18:28:24

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