Complexity of finding all edge cuts of a directed graph

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I have a problem in which for a certain graph I need to compute the min cut for r times (r can be HUGE). Because each time the edge weights can be different, what i am doing (in practice) is to calculate all the edge cuts, and find the one with minimum total weight for each iteration on r.

I wonder if computing all the edge cuts is exponential.

I am using BDD and reliability theory to calculate all the edge cuts, so I am not sure what the actual complexity is there, but I want to know what would be the best complexity for finding all the edge cuts for a directed graph in theory.

Thanks,

Amir.