The schedule of FHC 2018 (November 1-2) is overlapped with 2018 ICPC Seoul Regional Contest.

Due to the schedule, dotorya, molamola., and me probably will not be able to attend FHC Final. I think it is unfair to Korean contestants. Is there a possibility that the date will be adjusted?

A — ok.

B — easy. ok.

C — most interesting

D — O(N^2) — precision issue, AC with biginteger / Slower solution — TL issue

E — I don't like this

G — straightforward voronoi

I — input format..

FGHI — TL issue (especially I)

J — see model solution. really?

K — easy. ok.

ICPC WF should keep the level of the problem high. But for this year it seems like a big fail...

Too many problems have issues not related to the core solution.

The schedule said that GP of moscow already started, but I can't find any link to join it..

XVIII Open Cup Grand Prix of Korea takes place on Sunday, February 4, 2018, at 11:00 AM Petrozavodsk time.

The link to the contest.

The problems were prepared by kriii, ltdtl, .o. and me.

I hope you all enjoy the problems.

I participated GP of Ukraine with my ID : seoulnu07 (Although I participated as ACGTeam until the last competition, our team lost on the icpc regional contest and the team is provisionally disbanded :( ).

Until ~2hr, There was my team on yandex scoreboard, but submissions after 2hr did not apply to the scoreboard. I got 9 problems, but the scoreboard said that seoulnu07 solved 6 problems. Also, I could't find my team in the official scoreboard.

There was no problem when I participated as ACGTeam, so is it a problem about multiple IDs? How to fix this problem?

I want to enable coach mode in gym, but I can't find the way to enable. Please help me :(

I found a problem about dynamic MST.

To solve it, I read this paper.

But I cannot understand it(Is it divide-and-conquer?)

Please help me plz T.T