作者LPH66 (-6.2598534e+18f)
看板puzzle
标题[中译] Puzzleup 2015 (15) Hands of a Clock
时间Thu Nov 5 00:15:13 2015
题目网址:
http://www.puzzleup.com/2015/
http://www.puzzleup.com/2015/puzzle/?15
答题时限: 11月５日７ＰＭ－比赛结束（约12月16日）
加分时限: 11月５日７ＰＭ－11月11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）
◆HANDS OF A CLOCK
How many times at least two of the three hands (hour, minute, second) of a
clock exactly overlap between 10:30 and 22:30?
Note: All hands move in a continuous motion with no discrete jumps.
在早上十点半与晚上十点半之间，
钟面上的时分秒三根针有至少两根针完全重合的次数有多少？
注意: 三根针都以连续方式前进，没有不连续的跳动。
--
'You've sort of made up for it tonight,' said Harry. 'Getting the
sword. Finishing the Horcrux. Saving my life.'
'That makes me sound a lot cooler then I was,' Ron mumbled.
'Stuff like that always sounds cooler then it really was,' said
Harry. 'I've been trying to tell you that for years.'
-- Harry Potter and the Deathly Hollows, P.308
--
※ 发信站: 批踢踢实业坊(ptt.cc), 来自: 123.195.39.85
※ 文章网址: https://webptt.com/cn.aspx?n=bbs/puzzle/M.1446653724.A.BD0.html
※ 编辑: LPH66 (123.195.39.85), 11/05/2015 00:15:50