2018年4月21日
Boxes（数学题）
摘要： 题目描述 There are N boxes arranged in a circle. The i-th box contains Ai stones.Determine whether it is possible to remove all the stones from the boxes 阅读全文
posted @ 2018-04-21 18:08 oc_co 阅读(195) 评论(0) 推荐(0)
Column Addition
摘要： 题目描述 A multi-digit column addition is a formula on adding two integers written like this: A multi-digit column addition is written on the blackboard, 阅读全文
posted @ 2018-04-21 16:16 oc_co 阅读(201) 评论(0) 推荐(0)