01 2018 档案

摘要:D - People on a Line Problem Statement There are N people standing on the x-axis. Let the coordinate of Person i be xi. For every i, xi is an integer 阅读全文
posted @ 2018-01-31 16:36 ╰追憶似水年華ぃ╮ 阅读(232) 评论(0) 推荐(0)