散落星河的记忆🌠
Published on 2017-09-02 11:31 in 暂未分类 with 散落星河的记忆🌠
摘要: 枚举子集 for (int x = s; x; x = (x - 1) & s) {} 高维前缀和 for (int i = 0; i < m; ++i) for (int j = 0; j < (1 << m); ++j) if (j & (1 << i)) f[j] += f[j ^ (1 << 阅读全文
posted @ 2019-03-31 15:41 散落星河的记忆🌠 阅读(268) 评论(0) 推荐(1) 编辑