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Unable to solve Max-Flow problem on Spoj
I was trying to solve this problem on Spoj . Click Here.
After spending a couple of hours on this I could only come up with a dfs solution which obviously got TLE.
Then I looked for help online and i found this quora solution QUORA SOLUTION .
Can someone tell me with an example and proof of the extra nodes to be added and why maxflow should be 2 for it to be right?
