Imagine you%u2019re planning an end-of-the semeter party, and are trying to deci

Question

Imagine you%u2019re planning an end-of-the semeter party, and are trying to decide which of your n friends to invite. This time, the limit is not the size of your house, since you%u2019ll be outside. Instead, the problem is that some of your friends just don%u2019t get along, and inviting any two who don%u2019t get along is a recipe for disaster. Luckily, it turns out each of your friends has a problem with at most three of your other friends.

Give a 1/3 approximation algorithm for this problem.

Explanation / Answer

start from the person whos has least number of enemies then make ai of his enemies as 1 indicating that they are not to be invited so proceed in this way and keep on eliminnating the enemies and reach till the end

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