摘要: 高维前缀和(SOS dp) A Xor B Problem again 二维前缀和 for (int i = 1; i <= n; i++) for (int j = 1; j <= n; j++) s[i][j] = s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 阅读全文
posted @ 2023-03-14 23:28 迷糊的Rufu 阅读(25) 评论(0) 推荐(0)