摘要: There is an array with n elements a1, a2, ..., an and the number x. In one operation you can select some i (1 ≤ i ≤ n) and replace element ai with ai  阅读全文
posted @ 2019-04-23 15:35 陈墨cacm 阅读(294) 评论(0) 推荐(0)