If this sentence occurred by itself, I’d be inclined to hyphenate “minimal-cut-sets”, as in your second suggested revision, to avoid a misreading where my translation as “minimal” modifies “approach” rather than “sets”. If the sentence occurred in a context that would (or should) prevent that misreading, then the original, unhyphenated version would appear OK. As I

know, my sentence was written with a straight line and no rhyme or reason.

Can you get rid of “to” altogether with “On which website should I upload the picture? What

we are supposed to do in this world. “