Good morning/afternoon/evening, Codeforcers!
There will be 6 tasks waiting for you to be solved in 135 minutes!
We would also want to thank:
isaf27 for the coordination and discussion of this round!
KAN for great help and advice of round prepartion!
alex20030190, KAN, Roundgod, gisp_zjz, sshwyR, xryjr233, jhdonghj112, low_, dragon_bra, gamegame, mmello, cycl, Reiva5, kzyKT, hitonanode, parker0523, baohiep for testing and providing valuable feedback of the problems!
MikeMirzayanov for great systems Codeforces and Polygon!
Score distribution will be announced at $$$n$$$ $$$(0 \leq n < + \infty)$$$ minutes before round starts.
We hope you high performance with a lot of points earned during contest!
UPD1 $$$n$$$ is chosen to be $$$300$$$.
Score distribution is
Div. 2: 500-1000-1500-1500-2000-2500
Div. 1: 500-1000-1500-2250-2750-4000
UPD2 The contest is ended despite CodeForces under attack from DDoS midway. Thanks all for joining!
Here is the editorial: Editorial
Congratulations to the winners!
People who were first to solve each task: