wyy1（宣团）：https://www.luogu.com.cn/discuss/1019058

ctj： 1 https://www.luogu.com.cn/record/164800154 tj https://www.luogu.com.cn/problem/solution/P10717

2 https://www.luogu.com.cn/record/163451238 tj https://www.luogu.com.cn/problem/solution/P9480

3

https://www.luogu.com.cn/record/159242304 tj https://www.luogu.com.cn/problem/solution/P2086

4

https://www.luogu.com.cn/record/124850048 tj https://www.luogu.com.cn/problem/solution/P1713

5

https://www.luogu.com.cn/record/124150946 tj https://www.luogu.com.cn/problem/solution/P1587

其他不想找了，蓝紫黑99%全是抄的题解，剩下1%不确定

@chen_zhe