CodeForces - 920C Swap Adjacent Elements
摘要：
传送门：点我 You have an array a consisting of n integers. Each integer from 1 to n appears exactly once in this array. For some indices i (1 ≤ i ≤ n - 1) i 阅读全文
posted @ 2018-09-05 13:30 Esquecer 阅读(243) 评论(0) 推荐(0) 编辑
