Difference between revisions of "ACM-ICPC 2018 Beijing Online Contest"
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Solved by oxx1108. 3:20:27 (+2) | Solved by oxx1108. 3:20:27 (+2) | ||
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+ | 题意:给 |
Revision as of 13:13, 22 September 2018
ECNU Foreigners
ultmaster: 感觉去年现场赛,也是这个风格吧。。。所以今年,不去北大了啊。。。
Problem A
Solved by ultmaster. 01:25 (+)
题意:复杂得一批。
题解:最多只能携带五个氧气瓶可以把氧气瓶个数记在状态里。加速药丸必须要在出这个格子的时候用掉(反正早用晚用都一样)。然后会产生不同权的边,所以要使用 Dijkstra 而不是 BFS。
Problem B
Solved by zerol. 00:45 (+)
题意:求若干个很短的字符串的循环最长子序列(可不连续),长度一样则要求字典序最小。
题解:枚举第一个串的所有子序列,判断可行性,最后把可行的子序列的所有旋转和答案比较。
Problem C
Unsolved. (-3)
ultmaster: 这题目出得真好!给验题人点赞!
做这个题不但不会给我带来任何好处,而且会增大我的工作量呢。。。所以我为什么要做这个题呢?
Problem D
Solved by kblack. 00:23 (+)
温暖的签到
Problem H
Solved by kblack. 02:37 (+2)
题意:k 维空间,求点到曼哈顿距离球的最短欧几里得距离。
题解:先纠正到原点,广义的第一象限,然后垂直下去(所有维同时减),有减成负的就不要了(当0),减到超平面上,就好了。
One,Two,Three,AK
Xiejiadong:久违的自闭场。
Problem A
Solved by Xiejiadong. 1:32:22 (+)
Problem B
Solved by dreamcloud. 1:02:57 (+)
Problem C
Unsolved. (-8)
Problem D
Solved by Xiejiadong. 1:04:45 (+)
Problem G
Unsolved. (-23)
Problem H
Solved by oxx1108. 3:20:27 (+2)
题意:给