It tracks water usage, if you want to optimize a solution that way, but that's commented out right now. I suspect that the shortest path solution is always the least water used solution.
I think you are wrong. I wrote my own solution (which I won't post, as several have now been posted) and found that for jugs with sizes 3 and 7, and target 11, there's a solution that requires 5 moves (fill Y, pour Y in X, pour Y in Z, fill Y, pour Y in Z), but that uses 14 water. There's a solution that requires just 11 water, but that requires 6 moves (fill Y, pour Y in X, pour Y in Z, pour X in Y, fill Y, pour Y in Z).

Of course, my program may be wrong, and I might have missed a 5 move solution that uses just 11 water.

In reply to Re^2: Challenge: N Jugs Problem by JavaFan
in thread Challenge: N Jugs Problem by Limbic~Region

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