摘要: "http://www.51nod.com/onlineJudge/questionCode.html !problemId=1501" dp求出环状不连续的前缀和,剩下东西都可以算出来,比较繁琐。 时间复杂度$O(n+m)$。 c++ include include include using n 阅读全文
posted @ 2016-11-07 19:22 abclzr 阅读(446) 评论(0) 推荐(0) 编辑