51Nod 1228. 序列求和/51Nod 1258. 序列求和 V4[等幂求和](伯努利数+多项式逆元/多项式插值) 日付: 10月 26, 2018 51nod +0 math 51nod math
Dancing Links, Exact Cover Problem(舞蹈链精确覆盖问题,高效解数独) 日付: 10月 26, 2018 data structures +0 dfs data structures dfs
51Nod 1213. 二维曼哈顿距离最小生成树(RMQ+最小生成树+贪心) 日付: 10月 25, 2018 51nod data structures geometry graphs + greedy 51nod data structures geometry graphs greedy
51Nod 1206. Picture[矩形并周长](扫描线+区间覆盖线段树) 日付: 10月 22, 2018 51nod data structures +0 geometry 51nod data structures geometry
Codeforces 1059E. Split the Tree (树上贪心) 日付: 10月 07, 2018 codeforces dfs greedy +0 trees codeforces dfs greedy trees