duckladydinh's blog

By duckladydinh, history, 2 months ago, In English,

Hallo,

I am stuck on the following graph problem: How many k-colorings (exactly k, k is a constant) of a sparse graph of n vertexes (n <= 50000) with no connected component of size s having more than s + 2 edges (almost tree).

I am completely stuck!!!

Could someone give me a hint? It's a problem from Hong Kong Regional Online Preliminary 2016 (all of their problems are super hard).

Thanks.

 
 
 
 
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