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不怕X一样的算法,就怕X一样的题意

Posted by cangratul at 2009-09-18 17:04:00 on Problem 1210
一下是一些很重要的题意以及(自己猜测的)对应,你能发现多少?(序号表示优先级)

1.任何一次转弯都是前一次状态结束后下一个路口发生(包括起点),即其实你已经在你当前位置的(面朝的方向)前面一点点的地方了
 对应:Position can be specified in terms of the last intersection you passed through (the numbers of the Avenue and Street that meet there) and your current heading

2.整个地图是100×100,那么”田“字所在的线和2条对角线是throughways.和题目给的图不是一回事
对应:the outer throughways will be labelled Fifty and the major and minor boulevards will cross at roads labelled Twentyfive.

3.是否在throughways上是由坐标和朝向共同决定的

4.所有a circle的地方任何转向都是合理的
对应:however they always intersect each other at a circle, which is shared by all other roads that meet at that intersection.(什么,你问我和这个有什么关系?这个你应该去问神,我认为)

5.水平和竖直的throughways-只能以-left的形式来进或出,斜的throughways-只能以-sharpleft的形式来进或出
对应:You may only enter or leave them by turning left (sharp left in the case of boulevards). (这个说得通)

6.斜线上只能45,135,竖直‘水平的只能90,180,但有个地方是都可以的,那就是the major and minor boulevards的交点(25,25),(-25,25),(-25,25),(-25,-25)

7.S0,A0这2条分别对应 S0N ,A0E
对应:If either of the roads involved is one of the central roads (A0, S0), they will be labelled N or E as appropriate.


有了一上这些信息以后,剩下的就没什么好说的了···

昨天做梦的时候,俨然梦见这道题这样对我说:
“爷考得不是算法,是阅读水平”

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