We will hold Japanese Student Championship 2026 -Advance- Qualification (AtCoder Beginner Contest 464).
- Contest URL: https://atcoder.jp/contests/abc464
- Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20260627T2100&p1=248
- Duration: 100 minutes
- Writer: harurun4635, physics0523, evima
- Tester: Nyaan, vwxyz0
- Rated range: ~ 1999
- The point values: 100-200-300-400-450-550-625
We are looking forward to your participation!
this will be my first contest on atcoder.
Break a leg!
Me too , goodluck
me too, good luck
My first contest for my new one.Hope a good luck.
This was also my first contest on AtCoder (and in general), only solved two problems.
hope no mo's algorithm
I am so nervous
Hope no 2D prefix sums
Locking in !
Hope no probability problem
JRYCB
YJYCB
ZDXCB
E:why not two-dimensional segment tree?
I can’t imagine updating on 2d segtree.
Just divide an area into four blocks: upper left, lower left, upper right, lower right, and recursively process four blocks like one dimension.
like this:https://atcoder.jp/contests/abc464/submissions/77029333
A typing speed competition.
I solved E in a simpler way
Just brute force!
edit: seems like Rssll_Krkgrd also came up with a solution like me :D
did only 3
This is my first lost rating contest:(
why E can be solved with O(Q * min(H,W))???Since there is a user edtiorial with O(QH),I think the contest is not really good.
Not O(Q*min(H,W)),O(Q+HW) is also fast and easier than it.
Are there going to be English editorials for problems A through C? I didn't get an AC on C until after the contest and I didn't use the way I've heard other people do it. Can other people explain how they solved C?