Contest day 2: https://dmoj.ca/contest/cco20d2
Hi CodeForces,
DMOJ will host a mirror of the 2020 Canadian Computing Olympiad this Wednesday and Friday 3:00PM ET.
The start time will be approximately 2 hours after the end of the official competition. Timeanddate links can be found within the links above. It will be a 3-problem, 4 hour contest, similar to IOI-style.
If the mirror time doesn't work for you, the problems will still be available for solving afterwards on the main judge. Good luck and have fun!
Auto comment: topic has been updated by FatalEagle (previous revision, new revision, compare).
Day 2 starts about 5 hours from the time of this comment.
Are editorials published anywhere for CCO problems?
Did you find Editorials? Or can you please share your ideas/strategy for the problem a game with grundy . Only thing i could think of other than using a prefix sum for the first subtask is to use a segment tree. But it got RTE. (i was kinda expecting that).
thank you.