摘要: /* HDU 6057 - Kanade's convolution [ FWT ] | 2017 Multi-University Training Contest 3 题意: 给定两个序列 A[0...2^m-1], B[0...2^m-1] 求 C[0...2^m-1] ,满足: C[k] = ∑[i&j==k] A[i^j] * B[i|j] m using namesp... 阅读全文
posted @ 2017-08-05 20:50 nicetomeetu 阅读(199) 评论(0) 推荐(0)
摘要: 每次NTT都忘记初始化,真的是写一个小时,Debug两个小时- - 阅读全文
posted @ 2017-08-05 16:25 nicetomeetu 阅读(186) 评论(0) 推荐(0)