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Re:一个有向无环图,让你用最少的士兵把这个图遍历,每个士兵只能沿一条路走

Posted by sunmoonstar_love at 2005-08-01 16:47:14 on Problem 1422
In Reply To:一个有向无环图,让你用最少的士兵把这个图遍历,每个士兵只能沿一条路走 Posted by:sunmoonstar_love at 2005-08-01 16:46:20
   左边集合a,右边集合b
如果b中的可以形成匹配,
则它可以被其他点来的兵访问,
不能被匹配的点只能设置个兵了

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