[P2857](https://www.luogu.com.cn/problem/P2857)--》紫
by lht1217 @ 2023-05-05 17:56:05
[CF83E](https://www.luogu.com.cn/problem/CF83E)：数据结构优化 dp，建议评紫，标签：dp,trie
by DaiRuiChen007 @ 2023-05-05 19:03:21
[P9166](https://www.luogu.com.cn/problem/P9166)
黄，省选签到题。
by uid_310801 @ 2023-05-05 19:09:15
[AT_abc258_g](https://www.luogu.com.cn/problem/AT_abc258_g)
一个简单的bitset处理题，显然评不到蓝。如果单单从bitset的角度看，黄题。
by Chancylaser @ 2023-05-05 19:30:52
[[ABC059D] Alice&Brown](https://www.luogu.com.cn/problem/AT_arc072_b)，建议评绿
[帮忙发了](https://www.luogu.com.cn/discuss/604617)
代码红，思想绿
by Kasa_ @ 2023-05-05 20:20:18
谢谢@[Kasa](/user/635955)
by ninji @ 2023-05-05 20:25:06
[P2151HH去散步](https://www.luogu.com.cn/problem/P2151)
建议升紫
by lht1217 @ 2023-05-05 21:43:59
[P2151]
(https://www.luogu.com.cn/problem/P2151)
建议升紫
在推出DP式后，还要用点边互换去除反边，构造边集01矩阵进行矩阵快速幂，码量大，思维也有一定难度
与其类似思路，运用邻接矩阵乘幂的题[P4159](https://www.luogu.com.cn/problem/P4159)为紫题难度
by Mo默Sh笙 @ 2023-05-05 21:47:11
@[Mo默Sh笙](/user/189485) [P2151](https://www.luogu.com.cn/problem/P2151)
by Mo默Sh笙 @ 2023-05-05 21:48:11
[P9169](https://www.luogu.com.cn/problem/P9169)
建议评蓝
标签：博弈论、拓扑排序、bfs
可以理解为P6560的升级版，码量较大
同时可以关闭提交题解通道了
by _pragmaTism @ 2023-05-05 22:43:33