Do you want to train your skill by a contest before ACM/ICPC Finals?
Codeforces Round #190 will take place on Friday, June 28th at 19:30 MSK. This is the last chance to practice, don't miss it!
I am cgy4ever from China, and this is my first round on Codeforces, I hope you will love it.
As usual, there will be 7 problems: 2 for Div2, 2 for Div1 and 3 for both. I am the writer of them. And I would like to thank Gerald and sdya for testing, and MikeMirzayanov for the Codeforces project including polygon system.
Good luck and have fun!
Update 1: The score distribution for Both Division is regular (500-1000-1500-2000-2500). The main character of all problem will be: Fox Ciel. (See here for more info)
Update 2: Also thanks Aksenov239 for helping prepared this round, including translate the problem statement into Russian. And I'm sorry for the delay of judgement at the beginning of this round. Fortunately it goes better now.
Update 3: I have write a draft of editorial for this round when you are solving problems.
You can read it here.
Note that I didn't do any proof read and there are some typesetting issue. Anyway, I will improve it and this version is just for someone who is urgent to know the intended solutions.
Update 4 Contest complete! This round will be rated!
Congratulations to the winners:
And after this round, ivan.metelsky becomes our new International Grandmaster!