[中译] Puzzleup 2019 (02) BALL GAME

楼主: buffalobill (水牛比尔)   2019-08-08 09:21:50
题目网址: http://www.puzzleup.com/2019/
http://www.puzzleup.com/2019/puzzle/?02
答题时限: 08月01日7PM-比赛结束
加分时限: 08月01日7PM-08月07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)  
◆BALL GAME
Your friend will put 100 balls with 5 different colors in a bag and tell
you the number of balls for each color. Then you will randomly choose a
ball and guess its color. Afterr seeing the ball, if your guess is
correct, you will take the ball. If not, then your friend will take the
ball. This game will continue until all the balls are taken. Both of you
try to get as many balls as you can.
What is the maximum number of balls your friend can take?
你朋友将100颗分五种颜色的球放入袋子里,并告知每种颜色的球数量各为多少。接
下来,你开始随机选择一颗球并猜其颜色。然后看球,如果你猜中球的颜色,那颗
球便由你取走。如果没猜中,则那颗球由你朋友取走。游戏持续进行至所有球都被
取走为止。你与你朋友双方都会尽可能地取走更多球。
问你朋友最多能拿到的球有多少?

Links booklink

Contact Us: admin [ a t ] ucptt.com