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# Invitation to CodeChef January Long Challenge 2019 sponsored By ShareChat

Happy New Year to the CodeChef community!

Celebrate the new year with CodeChef’s January Long Challenge 2019 sponsored by ShareChat. This programming contest lets you tackle 8 problems over 10 days and it’s open to programmers in every country and at every skill level. The contest problem statements will also be available in English, Hindi, Bengali, Russian, Mandarin and Vietnamese.

Participants will also have the opportunity to apply for jobs at ShareChat - India’s fastest growing social network. Visit the contest link for more details.

I hope you will join your fellow programmers and enjoy the contest problems. Joining me on the problem setting panel are:

I hope you will enjoy solving them. Please give your feedback on the problem set in the comments below, after the contest.

# Contest Details:

Time: 4th January 2019 (1500 hrs) to 14th January 2019 (1500 hrs). (Indian Standard Time — +5:30 GMT) — Check your [timezone](https://www.timeanddate.com/worldclock/fixedtime.html?msg=CodeChef+January+Challenge+2019&iso=20190104T15&p1=44.

Registration: You just need to have a CodeChef handle to participate. For all those, who are interested and do not have a CodeChef handle, are requested to register in order to participate.

Prizes:

Top 10 performers in Global and Indian category will get CodeChef laddus, with which the winners can claim cool CodeChef goodies. First to solve each problem except challenge - 100 laddus. Know more here: https://www.codechef.com/laddu. (For those who have not yet got their previous winning, please send an email to winners@codechef.com)

Good Luck!
Hope to see you participating!!
Happy Programming !!

This question is marked "community wiki".

6★mgch
4451436
accept rate: 20%

 6 Editorials for all problems are ready and shall be available as soon as admin moves them to the public. Hope you all had a nice contest. answered 14 Jan, 16:29 4.0k●31●105 accept rate: 22% 2 Will there be an editorial for the Challenge problem as well? (15 Jan, 08:56) shoom6★
 3 Questions are good but not as good as most of the previous long challenge problems. Interactive problems from December long challenge were interesting. answered 09 Jan, 22:03 4★yaminote 147●5 accept rate: 3% We don't have a lot of setters and creative ideas for med+ problems. Hopefully, we'll have some interactive problems in the future. (10 Jan, 01:53) mgch6★
 1 guys plz help me ??? i got a serious issue i was at rank 38 just 15 min before and my score was 0.482 points and now putted my best code of the ques MATCHIT and got 0.483 points but now rank is 138. I mean seriously man guys with points 0.482 are having 37 rank and me having 0.483 points is having 138 rank. i think there is some bug or error in checking process plz fix it asap : ( answered 13 Jan, 22:18 30●4 accept rate: 9% 1 i think score are not being recalculated for the problem MATCHIT plZ look into this : ( (13 Jan, 23:03) very bad of codechef for no reply till now : ( sorry bro but I cant help you in this matter. (14 Jan, 01:11)
 1 This contest was pretty good.I solved 6/8(left the challenge problem + Pizza Slice) ...but there is some problem. My point of view from Div.2--> All the questions were based on observing some pattern and then writing the code. That's it.Same was the case in December-Challenge except for "Color-binding Feast" and that graph-based problem. I am really missing those algorithmic and mathematical problem(s) which 'Codechef' used to have in their Long Challenges and then, those were the problem(s) from which we get to learn the most. For example, I hope the Chef cooks something delicious this February ! :) <3 answered 14 Jan, 19:33 -863●9 accept rate: 0%
 1 Feedback from my side - Avoid using problems (as med-hard+) whose brute-force soln cannot be written. Problems which involve finding observations are deemed to have >2.5k ACs. answered 15 Jan, 19:05 2.7k●1●6●18 accept rate: 10% 1 Problems which involve finding observations are deemed to have >2.5k ACs. Especially in 10 days due to the other reasons we know of. (15 Jan, 19:46)
 0 As no one has answered my query even after asking so many times, now I am posting it here : Problem Link : https://www.codechef.com/JAN19B/problems/XYPIZQ It is mentioned in the problem that : Mark N points A1,A2,A3,…,AN on one ray in this order (A1 is closest to A0). So does that mean, first comes A0,then A1,then A2 and so on... or I can randomly mark A1,A2,A3,A4,..ETC....wherever I want ? Can points overlap? Please clear my doubt guys!! / :( answered 12 Jan, 13:46 -863●9 accept rate: 0% 1 I assume them to be distinct(can't overlap) and I also assume that they should be A1,A2,A3 in order(not random)... (Obviously ?) I wonder how can you mark them randomly... You are not supposed to ask this query in discuss.. you should ask it in comment section below problem statement... (12 Jan, 14:35) 1 Thanks!:) I already did that but no-one replied... Thanks again !:) (12 Jan, 16:59) 1 no problem :) (13 Jan, 13:49)
 0 @taran_1407 pls..provide editorial for MATCHIT problem. answered 18 Jan, 00:36 10●2 accept rate: 0%
 0 Yeah, only MATCHIT doesn't have an editorial as of now. Kindly provide it. answered 18 Jan, 11:40 1 accept rate: 0%
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