Help with TLE verdict

Revision en1, by Chi, 2018-12-20 10:06:06

I tried solving problem 321C — Ciel the commander with centroid decomposition. I think thats what many people did and got an AC with, but my submission got a TLE. Could anyone tell me why did it exceed the time limit?

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en1 English Chi 2018-12-20 10:06:06 354 Initial revision (published)