### Ripatti's blog

By Ripatti, 10 years ago, translation,
Hello everyone!

I am problems' author of today round. I hope you will like this contest :)

I thank Artem Rakhov, Maria Belova and Dmitry Matov for help in preparing of the round.

Good luck!

UPD.
Winner is levlam.
Tutorial.

• +91

 10 years ago, # |   +7 Wish it to be nice ;) good job anyway ;)
 10 years ago, # |   +16 this is my first contest.wish it to be nice.
•  10 years ago, # ^ |   0 Good Luck :) I wish you high rating after this contest!
 10 years ago, # |   +2 Hope for a good contest. :)
 10 years ago, # |   0 It was a nice contest .. really one word .. "Nice" :)
 10 years ago, # |   0 Nice problemset,thanks
 10 years ago, # |   0 Can anyone explain the 1st test case for "D. Dividing Island"?i.e.Input3 4 2 2 35 8 3OutputYESaaabbaabbbcbb..ccb..
•  10 years ago, # ^ |   0 Output is one of possible dividings of icelands with 5 a's, 8 b's and 3 c'sMaybe you should ask more specific question?
 10 years ago, # |   0 In problem C,whats 34th test case ?
•  10 years ago, # ^ |   0 output the leading zero. see sample via my submission -> source ID -> test case is on the bottom.
•  10 years ago, # ^ |   0 answer is a number with leading zeroI have just had my solution fault on the same test :(
 10 years ago, # |   +1 It was a good contest. Thank you ;)
 10 years ago, # |   +1 It was really nice contest :)
 10 years ago, # | ← Rev. 2 →   +1 Understandable problem description +Perfect Language are the main advantages of the today's Roundin contrast to Round # 58 Problem E needs more clarification!!Karlsson wins when he makes the final chocolates eating !!? and the same for Lillebror!?this was ambiguous point./////////////Question off the round - what's the effect of checking out of the round button in the right top of the standings page !?I'm afraid that makes me out of the today contest !!! :D
•  10 years ago, # ^ |   +1 yeah! today's problem statements are more easy to understand.
 10 years ago, # |   0 When will the rating change?
•  10 years ago, # ^ |   0 Now the rating is changedBut hopelessly ;My rating decreased although today's rank [173] is my best rank and also today's score is my best score 1240I'm trying to understand the rating system mechanism from herehttp://codeforces.com/blog/entry/102but no sufficient details or (examples ) !!!
•  10 years ago, # ^ |   0 Rating isn't depend on your score.It only depend on your place, count of players and their(and your) ratings.Maybe, your rating decreased because of small number of participants or most of all has rating less than you.
•  10 years ago, # ^ |   0 Really awesome mechanism to reflect how skilled u r amongst other participant..
 10 years ago, # |   0 Who is going to publish the solution and analysis for today's round..i am waiting for it....
•  10 years ago, # ^ | ← Rev. 2 →   0 A, B, C - done. D is coming.
 10 years ago, # |   +1 Nice Problems. Thanks
 10 years ago, # |   0 Thanks for this round! It was great!
 10 years ago, # |   0 What is the O(n) solution for B ??
•  10 years ago, # ^ |   0 int ans=0; FOR(a,1,n) if (rank[a]