I am trying to do June 2014 R for D2 and Q5 is flow augmenting. I managed to get a max flow of 104 but the mark scheme says 102. I checked one of my paths and it leads to a back flow of 3 down a 10 capacity arc. However this leads to conservation of flow not being true anymore.
Does anyone know why this is and if I need to use the entire capacity of an arc for a back flow?
Why is my back flow not working D2?
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