Hello CodeForces Community,
I’d like to invite you to CodeChef December LunchTime at https://www.codechef.com/LTIME31.
Time: 27th December 2015 (1100 hrs) to 27th December 2015 (1400 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone
Details: https://www.codechef.com/LTIME31
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.
- Problem Setter and Editorialist: CherryTree (Sergey Kulik)
- Problem Tester: shef_2318 (Pavel Sheftelevich)
- Contest Admin: PraveenDhinwa (Praveen Dhinwa) and pushkarmishra (Pushkar Mishra)
- Mandarin Translator: huzecong (Hu Zecong)
- Vietnamese Translator: VNOI Team
- Russian Translator: CherryTree (Sergey Kulik)
- Language Verifier: rarora7777 (Rahul Arora)
Prizes:
- Top 10 performers in Global and Indian category will win a cool CodeChef T-shirt. (For those who have not yet got their previous winning, please send an email to [email protected])
It promises to deliver on an interesting set of algorithmic problems with something for all.
Good Luck! Hope to see you participating!!
Why the tescase bellow not available in testcases of 1st subtask ? (Weak Testcase in EXNETWRK )
2 1
Proof :
https://www.codechef.com/viewsolution/9024194
https://www.codechef.com/viewsolution/9025230
And I got WA in frist subtask , why ?
For N =4 and M=4
1 2
2 4
3 4
1 3
why this solution give me WA ?
Really very bad checker !
It'll be great if such announcements can be made 1 day in advance.
Does that mail id([email protected]) even work?
I dropped a mail a couple weeks ago but no reply yet.
I didn't see any mod in problem 4(Seedlings) but all of the accepted solutions seem to have used (10^9 + 7) as mod.
My solution seemed right to me.Could this be the reason it failed on bigger tests(Of course for some test cases answer will exceed (10^9 + 7))?
Update Yes, mod(10^9 + 7) was required to pass the problem(checked in practice) although it was not stated in the problem statement.
When will the practice be opened?
Hi, the problems have been moved to practice, you may access them.
How this solution got AC ?
Check this test case 1
5 6