I divided the problem to solving for every bit

Then what i saw is if i want to correct a position i might need to change a whole row or column, which can trigger new changes in other places, I can do them but then it can change other people ect...

So the question is given that i need to trigger changes in some specific places am i gonna be able to do all the changes that will be triggered, or will it go into an infinite loop? Thats when I understood i could model "triggering" as an edge in a graph and it became checking for a cycle with an operation i must do in it