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链接：点击打开链接 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, but the sum is not necessarily correct. ...

链接：https://www.nowcoder.com/acm/contest/127/I 来源：牛客网 文章转载自：xuanqis.com 题目描述 盼成巨巨是511的学神！ 有一天，宇鑫大佬在玩硬币，将硬币摆成一排，巨巨走过来看了一眼，向宇鑫大佬提出问题：“假如显示出正面的硬币为’(‘，反面的硬币为‘)’我可以将一段区间的括号同时翻转（‘(’<---->‘)’），至少需...