ACM-ICPC 2017 Asia Tsukuba Regional

I can't spell your name

Problem A

Solved by Xiejiadong. 00:09:42(+)

Problem B

Solved by dreamcloud. 00:35:42(+)

Problem C

Solved by oxx1108. 00:58:09(+)

Problem D

Unsolved.

Problem E

Solved by Xiejiadong. 03:00:39(+1)

Problem F

Unsolved.

Problem G

Solved by oxx1108. 04:56:50(+1)

Problem H

Unsolved.

Problem I

Solved by Xiejiadong. 03:22:13(+3)

Problem J

Unsolved.

Problem K

Unsolved.

ECNU Foreigners

ultmaster: 签到成功！

Problem A

Solved by zerol. 00:12 (+)

Problem B

Solved by ultmaster. 01:26 (+)

题意：把 $m$ 个点两两匹配成 $m/2$ 条直线，然后求最多的平行线对数。

题解：可能划分的数量大概只有 2E6。巧妙地把这些方案枚举出来了以后，逐一计算就可以了。

因为没有输出答案，错误地把 debug 信息当成了答案。自闭半小时。

Problem C

Solved by ultmaster. 00:38 (+1)

题意：非常类似于 CPU 中的流水线。每条指令在每个阶段的用时只跟指令有关，不跟阶段有关。求某个时间点各个指令都在第几个阶段（或在等待第几个阶段）。

题解：暴力算出每个东西进入流水线的时间。然后进入流水线之后每个周期的时间，是跟之前进入流水线的所有指令所需要的时钟周期的最大值有关的。至于如何判断是否已经结束是否在等待，大概只要模一下算一算就好了。同时要考虑到进入第一个阶段之前的情况（要先判断）。

Problem F

ultmaster: 题目读错背大锅。而且可能顺带抹杀了做出其他题的可能性。

Problem G

Solved by kblack. 02:28 (+)

Problem I

Solved by kblack. 01:28 (+1)

Problem J

Solved by kblack. 03:33 (+)