2011 ACM-ICPC World Finals

Problem A

Unsolved.

Problem B

Unsolved.

Problem C

Solved by zerol. 00:46 (+)

Problem D

Unsolved.

Problem E

Solved by ultmaster. 03:53 (+)

Problem F

Unsolved. (-3)

Problem G

Unsolved.

Problem H

Solved by zerol. 04:39 (+1)

Problem I

Solved by kblack. 04:06 (+1)

Problem J

Solved by ultmaster. 02:53 (+3)

题意：300 * 1000000 的 01 背包，求方案，要物品数量尽量少，同时字典序最大。

题解：发明了若干种假算法之后，直接开了个 300*1000000 的数组存储所有点的最短路径。

Problem K

Solved by ultmaster. 01:28 (+)

题意：求一个最小的间距使得多边形刚好能卡过。

题解：求完凸包，旋转卡壳。但是数据范围太小了根本不需要。