Throughout the year, Google Code Jam hosts online Kickstart rounds to give participants the opportunity to develop their coding skills, get acquainted with Code Jam’s competition arena, and get a glimpse into the programming skills needed for a technical career at Google.

Each Kickstart round gives participants 3 hours to solve challenging, algorithmic problems developed by Google engineers. Participating is a fun way to grow your coding skills—and potentially explore opportunities at Google.

Inviting you to solve some fun and interesting problems on Sunday, August 26, 2018 05:00 UTC.

Dashboard can be accessed here during the contest. Problem analysis will be published soon after the contest.

Throughout the year, Google Code Jam hosts online Kickstart rounds to give students the opportunity to develop their coding skills, get acquainted with Code Jam’s competition arena, and get a glimpse into the programming skills needed for a technical career at Google.

Inviting you to solve some fun and interesting problems this Sunday, March 18, 2018 05:00 UTC – 08:00 UTC.

Link to contest dashboard
Problem analysis will be published soon after the contest.

Hello Codeforces Community!

I invite you all to take part in HackerEarth's October Easy contest, scheduled on the 1st of October 2017 at 22:00 IST.

Problems have been set by me and tested by paradox1. We are very grateful to HackerEarth admin r3gz3n for his help. :)

You will be given 6 algorithmic problems to solve in 3 hours. Partial scoring will be used (you get points for passing each test case). Although the contest is targeted towards beginners, we hope even experienced problem-solvers find one or two problems to be interesting. The contest is rated and prizes will be awarded to the top 5 beginners.

Good luck and have fun! :D

UPD: Contest has started.

UPD: Contest has ended. Editorials are out. Congratulations to the top 5!
1. I_love_Tanya_Romanova
2. chemthan
3. shubhamgoyal__
4. akulsareen
5. Trans

Hello Codeforces Community!

I invite you all to take part in HackerEarth's September Easy contest, scheduled on the 1st of September 2017 at 21:30 IST.

Problems have been set by rhezo and tested by jtnydv25 and me. We are grateful to HackerEarth admin MazzForces for his help. :)

You will be given 6 algorithmic problems to solve in 3 hours. Partial scoring will be used (you get points for passing each test case). Although the contest is targeted towards beginners, we hope even experienced problem-solvers find one or two problems to be interesting. The contest is rated and prizes will be awarded to the top 5 beginners.

Good luck and have fun! :D

UPD: Contest has ended. Editorials are out. Congratulations to the top 5!
1. uwi
2. vikasparmar11111
3. idk2
4. Benq
5. tanmay273

Hello Codeforces Community!

I invite you all to take part in HackerRank's HourRank contest, scheduled on the 2nd of July 2017 at 20:30 IST.

Problems have been set by by me. I'd like to thank kevinsogo for his invaluable help in testing the problems and in all other aspects of the contest.

The problems will have subtasks to make them interesting for everyone. I strongly recommend to read all the problems.

The contestants are ranked by score. If two contestants get the same score, the person who reached the score first is ranked higher. Top 10 winners will receive a HackerRank T-Shirt.

Best of luck! :)

UPD: Contest has ended. Editorials are out. Congratulations to the top 10!
1. arsijo
2. adamant
3. kmjp
4. irkstepanov
5. RAVEman
6. SmallBoy
7. Tima
8. sahedsohel
9. fmota
10. lzw4896s

Hello Codeforces Community!

I invite you all to take part in HackerEarth's January Easy contest, scheduled on the 1st of January 2017 at 21:30 IST.

Problems have been set by subway and tested by me. We are grateful to HackerEarth admins belowthebelt and r3gz3n for their help. :)

You will be given 6 algorithmic problems to solve in 3 hours. Partial scoring will be used (you get points for passing each test case). Although the contest is targeted towards beginners, we hope even experienced problem-solvers find one or two problems to be interesting. The contest is rated and prizes will be awarded to the top 5 beginners.

Good luck and have fun! :D

UPD: Contest has ended. Editorials will be out soon. Congratulations to the top 5!
1. savinov
2. nuip
3. Kaban-5
4. nhho
5. ajinkya1p3

Hello Codeforces Community!

I invite you all to take part in HackerEarth's August Easy, scheduled on the 1st of August at 21:30 IST.

Problems have been set by me(satyaki3794) and tested by akulsareen. I am also grateful to HackerEarth admin belowthebelt for his help and guidance.

You will be given 6 algorithmic problems to solve in 3 hours. Partial scoring will be used (you get points for passing each test case). Although the contest is targeted towards beginners, we hope even experienced problem-solvers find one or two problems to be interesting. The contest is rated and prizes will be awarded to the top 5 beginners.

The main characters of this round are Mancunian, a die-hard supporter of Manchester United Football Club and his arch-nemesis Liverbird, who supports Liverpool FC. You will help Mancunian get the better of Liverbird by solving algorithmic problems. :D

GL && HF

UPD1: Contest is finished. Congratulations to the top 5.
1. codingstar7
2. zeliboba
3. Morphy
4. dk2nnth
5. azukun

UPD2: Editorials are live.

I recently tried the problem 294E - Шаасс Великий and my submission is 10704270.

I am getting TLE on test 8 which is a maxtest (5000 nodes). I am unable to figure out my mistake. Could someone please take a look at it and guide me in the right direction, if they can figure out what my mistake is?

My logic is as follows: I used a n^2 algorithm. One by one, I selected each edge as the one I will delete and found the optimal vertices in the two trees created (optimal means has the least sum of distances to other vertices in the same tree). Then I join those two to get the answer and compare it with the global answer.