2020年5月3日
C. New Year and Permutation
摘要： Recall that the permutation is an array consisting of nn distinct integers from 11 to nn in arbitrary order. For example, [2,3,1,5,4][2,3,1,5,4] is a 阅读全文
posted @ 2020-05-03 23:21 DeaL57 阅读(156) 评论(0) 推荐(0)