beginner_boy's blog

By beginner_boy, history, 7 months ago, ,

Hello everyone, i am stuck with the problem 1279 — Graph Coloring which can be solved computing the value $K ^ {(n - r)}$, where $r$ is the rank of matrix $a$, according with this blog, but i cant understand how it works, specifically what's the sense of the matrix $a$ builded in this code bellow:

snippet

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