[中譯] PuzzleUp 2010 (5) Nine Balls
首頁：http://www.puzzleup.com/2010/
時限：2010/08/12（四）19:00～08/18（三）18:59
答案可上傳５次，但每改１次扣２０分（基本分為１００分）
在比賽期間內可隨時回答，但只有在時限內回答者有額外加分
◆Nine Balls
You have nine balls, three of which are slightly heavier, and three of which
are slightly lighter than the normal three. All three balls in each group has
the same weight. All nine balls are identical otherwise. Your mission is to
determine the group of every ball using a pair of scales.
How many weighings are needed in order to ensure the accomplishment of your
mission?
你有九個球，三個正常，三個比較重，三個比較輕，但三組各自都是一樣的重量，
除此之外這九個球完全相同。
現要利用一架天平分出三組球，問至少需要使用幾次天平才能保證分出？
==============================================================================
算是老題型....吧(?)
不過似乎沒有 重+輕=2正常 這個假設 XD
--
◢ ˊ_▂▃▄▂_ˋ. ◣ ▅▅ ▅▅ ι●╮ █▄▄▄▄▄
▍./◤_▂▃▄▂_◥ \'▊ ＨＡＲＵＨＩ █████ ＜■┘ ▄▄▄▄▄▄▄
▎⊿ ◤◤◥█◥◥█Δ ＩＳＭ By-gamejye ￠|\ ▌▌▌▌▌▄▌▌
▏ζ(▏●‵◥′●▊)Ψ ▏ █ ⊿Δ ▄▄▄ ▄▄▄▄
█/|▊ 〃 、 〃▋ |\ ▎ ハルヒ主義 █▄▄▄█▄▄
◥◥|◣ ‵′ ◢/'◢◢S.O.S 世界を大いに盛り上げるための涼宮ハルヒの団
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.112.24.253
※ 編輯: LPH66 來自: 140.112.24.253 (08/11 19:43)
推
08/12 12:17, , 1F
08/12 12:17, 1F
推
08/12 12:22, , 2F
08/12 12:22, 2F
推
08/12 14:25, , 3F
08/12 14:25, 3F
推
08/12 14:30, , 4F
08/12 14:30, 4F
推
08/12 19:55, , 5F
08/12 19:55, 5F
→
08/12 19:55, , 6F
08/12 19:55, 6F
推
08/12 20:08, , 7F
08/12 20:08, 7F
推
08/12 22:09, , 8F
08/12 22:09, 8F
推
08/12 22:25, , 9F
08/12 22:25, 9F
→
08/12 23:53, , 10F
08/12 23:53, 10F
→
08/13 01:29, , 11F
08/13 01:29, 11F
→
08/13 01:34, , 12F
08/13 01:34, 12F
推
08/13 04:35, , 13F
08/13 04:35, 13F