Hi everyone, it's me again!
After my last round, this will be my second round on Codeforces. I believe you'll find the problems interesting and I hope you'll enjoy the round.
This round would not be possible without dans who improved one of the problems that made this round possible, and also helped in preparing and testing the round. Also, thanks to all the testers, IlyaLos, HellKitsune and phobos and thanks to MikeMirzayanov for the awesome Codeforces and Polygon platforms.
ZS the Coder and Chris the Baboon's trip in Udayland is over. In this round, you'll help ZS the Coder solve the problems he have randomly came up with. Do you have what it takes to solve them all?
The problems are sorted by difficulty but as always it's recommended to read all the problems.
We wish you'll have many solutions and enjoy the problems. :)
As usual, the scoring will be published right before the contest.
UPD : There will be 5 problems in both division as usual.
Div. 2 : 500 — 1000 — 1500 — 2000 — 2500
Div. 1 : 500 — 1000 — 1500 — 2500 — 2750
Good luck and I hope you enjoy the problems!
UPD : Contest is over. I hope you enjoyed the contest and problems :) I'm sure some of you wants to see the editorial now, so here it is while we wait for System Test to start.
UPD : System tests is over. Here're the winners :
Division 1 :
Division 2 :
Congratulations to them!