好d

Codeforces Beta Round #3 D. Least Cost Bracket Sequence(贪心,想法,好题)

Codeforces Round #399 D. Jon and Orbs(概率dp,好题)

Codeforces Alpha Round #21 D. Traveling Graph(欧拉路,floyed,dp,好题)

codeforces 717 D. Dexterina’s Lab(矩阵快速幂加速dp,好题)

Codeforces 557D Vitaly and Cycle【二分图染色+思维】好题~

Codeforces 522D Closest Equals【思维+线段树+离线查询】好题~

Codeforces 510D Fox And Jumping【数论+Dp+压缩空间】好题~

#9 (Div. 2 Only) D. How many trees? （dp）（好题）

Codeforces Round #426 (Div. 2) D. The Bakery（DP+线段树） 好题

Codeforces 389D Fox and Minimal path【构造+二进制思维】好题！

2017 四川省赛 D.Dynamic Graph【拓扑排序+bitset优化】好题！

CF 590D Top Secret Task【dp递推+滚动数组】【好题】

Codeforces 343D Water Tree【思维+Dfs序+线段树】好题！

CS R46 C(思维套路),D(好题,数据结构维护) E(???)

CS R17 C(思维DP) D(二进制,淘汰) E(好题:博弈+DP)

Codeforces 426D Sereja and Table【思维+暴力枚举】好题！

Codeforces 454D Little Pony and Harmony Chest【思维+状压Dp+记录路径】好题！

CS R26 C(双指针),D(观察,模拟),E(LIS经典 好题)

CrossLight.Pics3D.v2003.12.3.2004.1.8WinALL(激光二极管3D模拟器,好用！)\

下午茶邂逅好音乐，5D.MINOR巧克力音箱携手MS蜜斯登陆京东众筹

Educational Codeforces Round 31-k叉哈夫曼&优先队列&好题-D. Boxes And Balls

Codeforces Round #442 (Div. 2)-广搜&剪枝&技巧&好题-D. Olya and Energy Drinks

codeforces 754D Fedor and coupons【优先队列+贪心*好题】

d

d

d

d

d

D

d

d

d