Luo Gu $ P2604 \ [ZJOI2010] $ network expansion network flow

Positive Solutions: Network Flow

Report problem solving:

Portal $ QwQ $

Aung first asked to run a maximum flow would not say $ QwQ $

Then the second question, first of all the rest of the original cost of the side edges become zero? Then all the original plus two points connected by edges gave a flow rate of $ inf $ fee of $ w $ edges to ensure flow is equal to $ k $ $ S $ to give even flow One node is $ k $ 0 cost side just fine ,,,

$ Jio $ flu this question a little simple ,,, so why is the purple Angluo Valley fans a good score Aung $ QwQ $

Tomorrow put $ code $? $ QwQ $