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A1134 Vertex Cover (25分)
一、技术总结 题意为，给出一个图，是按边给出，给出每条边两边的顶点id号，然后再给出k个顶点集合，要我们依次判断是否每条边的两个顶点至少有一个在集合中，那么则称该顶点集合为Vertex Cover，同时输出Yes，否则输出No。 使用一个数组存储每条边的顶点信息，用于判断是否每条边的顶点中至少有一PAT A1134 Vertex Cover (25 分) 图
题目大意：给出一张图，判断给出的顶点序列是否满足“vertex cover"。所谓"vertex cover"，是指图中任意一条边，至少有一个端点被包含在这个顶点序列里。 根据题意，只要图中有一条边，它的两个顶点都不在给出的序列里，那么这个序列就不满足"vertec cover"。反过来，如果不在序【PAT】A1134 Vertex Cover【图论】
A vertex cover of a graph is a set of vertices such that each edge of the graph is incident to at least one vertex of the set. Now given a graph with several vertex sets, you are supposed to tell if each of them is a vertex cover or not. Input SpecificPAT A1134 Vertex Cover （25 分）
A vertex cover of a graph is a set of vertices such that each edge of the graph is incident to at least one vertex of the set. Now given a graph with several vertex sets, you are supposed to tell if each of them is a vertex cover or not. Input Specificati