I know there's a link to the posting guidelines, but I'm guessing a significant percentage of people don't bother reading them, since many posts lack examples of input and/or output data, thus making it much more difficult to suggest useful solutions. I would like to see that particular guideline at minimum added above the SoPW submission form, or maybe checkboxes for "I have supplied examples of input / output data for my problem" and "This is a theoretical problem", with an error being generated if posters don't click one. This will significantly cut down on the amount of back-and-forth needed before a good solution can be suggested.
I'm just tired of having to spend as much time trying to figure out what the OP wants as coding a solution. I'm sure many of you are as well.