Central Europe Regional Contest 2018

Problem A

Solved by ultmaster. 02:03 (+)

Problem B

Solved by zerol. 03:57 (+)

Problem C

Solved by ultmaster. 01:06 (+1)

Problem D

Solved by kblack. 04:39 (+4)

题意：👦🚮🍽，🐶🏉，⌚。

题解：分为两种情况：盘子掉在地上了，🐶捡起来再回来，时间好算的；🐶跳起来接到某个高度的盘子（同时决定了时间和距离），高度可以二分，然后判断两个坐标的时间是否来得及（全速奔跑和满速起跳）。

这🐶的速度和🍽的速度竟然不一致，伽利略的棺材板压不住了。

$\sqrt{-10^{-12}} = nan$

Problem I

Solved by ultmaster. 00:27 (+)

拿到题目的时候比赛已经快过去半个小时了。

Problem J

Solved by zerol. 00:48 (+)

Problem L

Unsolved. (-1)