Square869120Contest #4 will be held on Sunday (4/ 9) 11:00 UTC. (20:00 JST / 14:00 MSK)
About Square869120Contest
・This contest is unofficial.
・Square869120Contest has been held 3 times before, and this is the 4th contest of Square869120Contest.
About Contest
・The contest are prepared by 9-th grade students, E869120 and square1001.
・Let's participate and enjoy!
Information
・Time: April 9th (Sunday), 20:00 JST (11:00 UTC)
・Duration: 200 minutes (3 hours 20 minutes)
・Number of Tasks: 8 Problems
・Writer: E869120 and square1001
・Rated: No [unrated]
・Language: Japanese / English
・This contest has many partial points, so if you can't get perfect score, you can get many partial points!
Past Square869120Contests
・Square869120Contest #3 (English / Japanese)
・Square869120Contest #2 (Japanese)
・Square869120Contest #1 (Japanese)
Update: The penalty of WA / TLE (or something unsuccessful submission except Compile Error), changed from 10 min to 0 min, so you don't have to worry about WA penalty!
9th grade students and on the verge of becoming purple! Respect. Out of curiosity, when did you start with all this and any training?
Actually, I'm not blue (really Yellow: E869120's rating is 1545 in topcoder, and 2303 in atcoder) E869120-in-Atcoder
I started competing in programming competitions in November 2015, about 1.5 years ago.
And I practiced in Atcoder, Topcoder SRM, and Codeforces.
I practice about 4 hours on weekday, and 9 hours on weekend on average. And sometimes, I make problems.
Sorry to my poor English.
Additionally, when I made contest s8pc-1 with E869120, I was a green/blue border coder in topcoder. So it was a challenging experience but we couldn't make good (but it is not bad! / It can't win to AGC problems because the quality is very very high) problems like s8pc-3 (But problem H is a good and difficult)
First time (s8pc-1), kyuridenamida and snuke helped for s8pc-1 as testers, but on s8pc-2 the testers are each other.
Auto comment: topic has been updated by E869120 (previous revision, new revision, compare).
Reminder: Contest will start 3 days later.
Auto comment: topic has been updated by E869120 (previous revision, new revision, compare).
Penalty time was changed! See update on my blog.
Contest starts in a day. I'm looking forward to your participation.
Reminder!!!!! This contest will start 24 hours later. (Updated at 04/08 11:47 UTC)
Otsukaresama! Really unbelievable achievement for junior high student.
Thank you very much! Good luck! :D
"The penalty of WA / TLE (or something unsuccessful submission except Compile Error), changed from 10 min to 0 min, so you don't have to worry about WA penalty!"
The contest page hasn't been updated.
I'm sorry to have kept you waiting. The contest page has been updated. (updated at 04/09 02:30 UTC)
The Contest will start about 2 hours later. (updated at 04/09 08:40 UTC)
Let's enjoy!!!!!!!!!!!
Link: https://s8pc-4.contest.atcoder.jp/
Problems are really nice and challenging :) Editorial?
Editorial(Japanese) updated.
Writer's code was linked on the top page. https://s8pc-4.contest.atcoder.jp/#
Thanks for making such a nice contest.By the way,it seems that you didn't sort the problems by their difficulty:)
Thank you. :)
Discuss here about problems and impressions.
http://codeforces.me/blog/entry/51511