nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial ###nameTypewriter ###descirptionOne day, Jerry found a strange typewriter. This typewriter has 2 in...

nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial 二分图的最小顶点覆盖定义：假如选了一个点就相当于覆盖了以它为端点的所有边。最小顶点覆盖就是选择最少的点来覆盖所有的边。 方法：最小顶点覆盖等于二分图的最大匹配。 我们用二分图来构造最小顶点覆盖。 二...

nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial 先bb一堆dij算法很简单，就是通过不断的松弛离源最近的点，说白了，就是一个bfs变种,或者叫做启发式搜索？启发函数就是当前的距离。搜索过程中松弛点 A*算法也不难，本质上就是启发式搜索，核心就...

nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial ###namePath ###descirptionYears later, Jerry fell in love with a girl, and he often walks for a lon...

nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial ###nameVacation ###descirptionTom and Jerry are going on a vacation. They are now driving on a one-...

nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial ###nameOperation ###descirptionThere is an integer sequence a of length n and there are two kinds o...

nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial ###nameBlank ###descriptionThere are N blanks arranged in a row. The blanks are numbered 1,2,…,N fr...

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nexthexonextbutterflyvolantisyearnyiliashokaindigoapollolandscapecactusmateryicarusfluidmaterial ###namepath ###descripptionYou have a directed weighted graph with n vertexes and m edges. The valu...

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