Question: Recall that for an undirected graph G = ( E , V ) , a k - vertex cover is a set C V with

Recall that for an undirected graph G =(E, V ), a k-vertex cover is a set C V with |C|= k
such that every edge in E has an endpoint in C.
The VERTEX-COVER problem asks, given a graph G and an integer k does G have a k-vertex
cover?

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