Question: (5 points) Suppose that an edge (u, v) in E has a nonnegative capacity fc(u, v) >= 0 from u to v and zero capacity

(5 points) Suppose that an edge (u, v) in E has a nonnegative capacity fc(u, v) >= 0 from u to v and zero capacity fc(v, u) = 0 from v to u. If a flow f(u, v) is pushed, show that a backward flow o

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