From wikipedia: "In order to be assigned an

Erdős number, an author must co-write a mathematical paper with an author with a finite Erdős number. Paul Erdős is the one person having an Erdős number of zero. If the lowest Erdős number of a coauthor is

*k*, then the author's Erdős number is

*k* + 1."

- You are given a collection of K papers, can you write an efficient algorithm for computing the Erdős number associated to each author?

I just discovered I have an erdos number == 4

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