題目網址: http://www.puzzleup.com/2019/
http://www.puzzleup.com/2019/puzzle/?06
答題時限: 08月29日7PM-比賽結束
加分時限: 08月29日7PM-09月4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)
◆POLYGON IN A CIRCLE
There is a polygon with all its vertices located on a unit circle. What
can be the maximum value of the sum of the squares of its edges?
有一多邊形,其所有頂點均座落於一單位圓之上。問其邊長平方之和最大之值為多少?