2019年5月1日
codeforces402B
摘要： Trees in a Row CodeForces - 402B The Queen of England has n trees growing in a row in her garden. At that, the i-th (1 ≤ i ≤ n) tree from the left has 阅读全文
posted @ 2019-05-01 21:56 yccdu 阅读(178) 评论(0) 推荐(0)