Stare at the diagram long enough and it will make sense....I did. Which path uses the lowest (most efficent) amount of effort....maybe think of the numbers associated with each hop as the number of footsteps it takes to get to the end, from left to right.
I looked again and I see that. So It that what “greedy method” means? That is interesting.
Still don’t see what the series of post has to do with this thread.