Because my netflow knowledge is not very good,I want to improve it.
My algo's expected running isn't so good but it got AC in 0.015sec...I don't know why,maybe m is quite small...
I need a pro whose expected running time is low enough no matter n or m is large...

If someone can help,I can help him some problems I have already got AC.

Please write your idea down here or send it to me,Thanks!
My email: neumann1@163.com