摘要: https://codeforces.com/problemset/problem/1829/G dp:设求的值:n。设置数组val[n]为第n个的答案。那么有递推:val[n] = val[n-id[n]] + val[n-id[n]+1] - val[n-2*(id[n]-1)]且以上均存在的情 阅读全文
posted @ 2024-07-11 16:17 WHUStar 阅读(15) 评论(0) 推荐(0)