Puzzleup 2015 (4) Sum of Palindromes - 拼圖
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By Leila
at 2015-08-20T01:22
at 2015-08-20T01:22
Table of Contents
題目網址: http://www.puzzleup.com/2015/
http://www.puzzleup.com/2015/puzzle/?4
答題時限: 8月20日7PM-比賽結束(約12月16日)
加分時限: 8月20日7PM-8月25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)
◆SUM OF PALINDROMES
Three different numbers between 10 and 1000 are palindromes and their sum is
also a palindrome. What is the maximum possible value of the multiplication
of these three numbers?
- The numbers cannot start with 0, for example 010 is not a valid number.
- A palindrome is a number which reads the same backward or forward.
Examples: 11, 101, 292.
三個不同的整數,介於 10 和 1000 之間,皆為迴文數,且三者的和亦為迴文數。
試問此三數的積最大為何?
- 數不能以 0 開頭,例如 010 不能算數。
- 迴文數是正讀反讀都相同的數,如 11, 101, 292。
--
LPH [acronym]
= Let Program Heal us
-- New Uncyclopedian Dictionary, Minmei Publishing Co.
--
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By Leila
at 2015-08-21T22:47
at 2015-08-21T22:47
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