Invitation to CodeChef Starters 108 (Rated till 6-stars) — 15th November
We invite you to participate in CodeChef’s Starters 108, this Wednesday, 15th November, rated till 6-stars (ie. for users with rating < 2500).
Time: 8:00 PM — 10:15 PM IST
Read about the recent judge migration here.
Joining us on the problem setting panel are:
- Setters: Raisual Evanraisul Islam Evan, Aditya Aditya.Rai Raj Rai, Aditya Everule Jain, Stuart cstuart Lim, Wuhudsm wuhudsm, Ronit ro27 Bhatt, Aniruddh Chimpanzee
- Tester: Apoorv TyroWhizz Kumar
- Statement Verifier: Nishank IceKnight1093 Suresh
- Text Editorialist: Nishank IceKnight1093 Suresh
- Contest Admins: Nishank IceKnight1093 Suresh, Shreyan Dominater069 Ray
Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest. The video editorials of the problems will be available only to Pro users.
Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here.
Hope to see you participating.
Good Luck!
Damn, Dominater069 and Everule finally came together for a contest!
expecting that Everule's problem will just be "print proof of your solution"
As a Tester I can't spoil much but you are not wrong
It is clashing with world cup semifinal between INDIA and NEWZEALAND.
OMG! Everule Round!!!
Contest details states duration — 2hrs on the home page- Link
Can someone clarify it shows problems will be available in 34 mins but the contest begins in 4 mins?
Is contest starting at 8:30pm IST? The timer is showing half hour left for start of contest
19:55 PM IST: Due to some issue, we are forced to postpone the contest by 30 minutes. The contest will start at 20:30 IST. Apologies for the inconvenience.
Sorry, we had to postpone by 10 more minutes.
at this point just postpone it to tomorrow and we can all watch the semifinal
Yes my mood changed too
Same bro. Pehle laga one sided match hoga kya hi dekhunga but ab :(
Mai match ka nhi dinner ka soch rha tha :)
2 Aditya are problemsetters.
Aditya
Aditya
My class has 45 students among which 14 are Aditya...
It's really like you throw stone on 3 random persons in my class and one will definitely hit an Aditya...
Once a lab assistant called my name and he got scared after witnessing half of the class staring at him.
Don't down vote me :_) I am one of a problem setter... One of my biggest fear while writing comments is downvotes.
How to prove that there is no palindromic prime number of even length other than 11?
All even length palindromes are divisible by 11.
My mind is blown.
the prime number will have length even
a[1] — — — a[2n] are its digits
than u know that
a[1] = a[2n] a[2] = a[2n — 1] a[3] = a[2n — 2] | | a[n] = a[n + 1]
if I rearrange this a little
a[1] = a[2n] a[2n — 1] = a[2] a[3] = a[2n — 2] a[4] = a[2n — 3] | |
I get sum of odd_digits = sum of even_digits i.e = a[1] + a[3] -- a[2n — 1] = a[2] + a[4] --a[2n]
it is a divisibility check of 11
Makes a lot of sense, thanks!
This was one of the most quality problem set.