题目网址: http://www.puzzleup.com/2015/
http://www.puzzleup.com/2015/puzzle/?12
答题时限: 10月16日7PM-比赛结束(约12月16日)
加分时限: 10月16日7PM-10月21日6:59PM
答对可得基本分100分。答案可上传5次,每改1次答案从基本分扣20分。
比赛期间内可随时上传答案,加分时限内答对第n天加(6-n)分
另依题目的难易有额外加分(如有80%的人这题答错,答对者加80分)
◆DIGIT TABLE
┌─┬─┬─┬─┬─┬─┬─┬─┬─┐
│1│1│1│1│1│1│1│1│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│2│2│2│2│2│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│3│3│3│3│3│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│3│2│2│2│3│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│3│2│1│2│3│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│3│2│2│2│3│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│3│3│3│3│3│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│2│2│2│2│2│2│2│1│
├─┼─┼─┼─┼─┼─┼─┼─┼─┤
│1│1│1│1│1│1│1│1│1│
└─┴─┴─┴─┴─┴─┴─┴─┴─┘
In the table given above in how many different ways can the number "12321" be
obtained?
- You can start from any "1".
- From a square you can move only to a neighboring (adjacent horizontally,
vertically, or diagonally) square.
- You can use a square more than once in any "12321".
在上表中有多少种方法可以串出12321这个数字串?
- 你可以从任何一个1格开始。
- 每一步你只能移到到八方向相邻的格子上。
- 你可以使用一个格子不只一次来构成12321。
Example:
┌─┬─┬─┬─┬─┐
│1│1│1│1│1│
├─┼─┼─┼─┼─┤
│1│2│2│2│1│
├─┼─┼─┼─┼─┤
│1│2│1│2│1│
├─┼─┼─┼─┼─┤
│1│2│2│2│1│
├─┼─┼─┼─┼─┤
│1│1│1│1│1│
└─┴─┴─┴─┴─┘
If the same problem was asked for obtaining "121" in the sample table, the
answer would be 208.
例:若题目改问由上面小的表中串出121的方法数,答案则为 208。