Luo Gu $ P2050 \ [NOI2012] $ network flow Food Festival

Positive Solutions: Network Flow

Report problem solving:

Portal $ QwQ $

Aung $ jio $ was beginning to see, wow looks a lot like the previous question wailing $ QwQ $

Then carefully Kankan range of data, found that wow seems to tens of thousands of points ,,, it is clear that the $ GG $

But a sense of $ jio $ good idea of ​​the direction of the sub-sub? Consider how to optimize lying $ QwQ $

If you have not considered taking into account the penultimate $ i $ good dish Zuosha would not have considered the penultimate $ k + 1 $ path? So consider adding a dynamic edge, each time only after consideration of $ k $ penultimate road before doing the penultimate $ k + 1 $ channel

So add a dynamic edge like $ QwQ $?

Detailed map of Hong Kong is not a $ QwQ $ and the same thing on the topic $ QwQ $

$ Over $? If I have another pot $ upd $!