phuthuynhochienthan's blog

By phuthuynhochienthan, history, 9 years ago, In English

I wonder which problem in the contest of Codeforces is the hardest one.

When I sort the problem list of Codeforces base on number of Accepted submission of user, I find out some problems as follow:

111E - Petya and Rectangle 68E - Contact

What is your opinion? :D

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