Puzzleup 2017 (19) Balls - 拼圖
By Iris
at 2017-12-13T19:59
at 2017-12-13T19:59
Table of Contents
題目網址: http://www.puzzleup.com/2017/
http://www.puzzleup.com/2017/puzzle/?19
答題時限: 12月14日7PM-比賽結束(約12月27日)
加分時限: 12月14日7PM-12月19日6:59PM
答對可得基本分100分。答案可上傳5次,每改1次答案從基本分扣20分。
比賽期間內可隨時上傳答案,加分時限內答對第n天加(6-n)分
另依題目的難易有額外加分(如有80%的人這題答錯,答對者加80分)
◆BALLS
You will put 33 identical balls into boxes numbered from 1 to 6.
* Every box will have at least as many balls as its number.
* Odd-numbered boxes will have odd number of balls and even-numbered boxes
will have even number of balls.
How many different placements are there (considering number of balls in each
box)?
你將 33 個相同的球放進編號 1 至 6 號的箱子裡。
* 每個箱子至少有它的編號那麼多的球。
* 奇數號箱子中要有奇數個球,偶數號箱子中要有偶數個球。
考慮各箱子內的球數,試問共有多少種不同的放法?
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チサト 1998/06/18 守野くるみ 打越鋼太郎的 1999/10/19 楠田ゆに 2000/02/15 樋口遙
2002/12/17 八神ココ 2011/01/11 HAL18於朱倉岳墜機 ∞與∫的世界 2011/04/02 茜崎空
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拼圖
All Comments
By Frederica
at 2017-12-16T22:21
at 2017-12-16T22:21
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at 2017-12-19T10:27
at 2017-12-19T10:27
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at 2017-12-23T11:53
at 2017-12-23T11:53
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at 2017-12-26T02:55
at 2017-12-26T02:55
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