14 January 2020

Educational Codeforces Round 80 Postmortem

What went well
  • The contest was so hard that I really wanted to quit after reading A, but persevered to the end. Somehow I solved three problems…
What went poorly
  • I'm terrible with floors and ceilings. I'm also apparently bad at quickly recognizing monotonic functions.
  • I'm also bad at bijecting problems; I did not recognize during the contest that C was asking for a monotonically increasing sequence of length 2n, rather than two sequences of length n with weird constraints on elements.
Where I got lucky
  • Solving three problems with a high penalty only cost 8 elo.

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