Puzzleup 2012 (4) Three Kings - 西洋棋
By Doris
at 2012-08-15T23:46
at 2012-08-15T23:46
Table of Contents
題目網址: http://www.puzzleup.com/2012/?home
答題時限: 8月16日7PM-比賽結束(約12月12日)
加分時限: 8月16日7PM-8月21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。
另有兩種加分: 1. 加分時限內答對。例:第N天答對,可加(6-N)分。
2. 題目越困難,加分越多。例:這題有n%的人答錯,答對者加n分。
◆Three Kings
What is the number of ways to place 3 kings on a standard chessboard so that
no one attacks the others?
If the problem was asked for 3x3 board the answer would be 8.
在一個標準的西洋棋盤上放入三個國王使其不互相攻擊有幾種放法?
若題目改問 3x3 的棋盤則答案為8。
K K K K K K K K K K K
K K
K K K K K K K K K K K
--
有人喜歡邊玩遊戲邊上逼;
也有人喜歡邊聽歌邊打字。
但是,我有個請求,
選字的時候請專心好嗎?
-- 改編自「古 火田 任三郎」之開場白
--
Tags:
西洋棋
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