https://usaco.org/index.php?page=viewproblem2&cpid=919
im not asking for the solution im just asking what is the problem asking, how am I suppose to know how much paint you have ;///
Each rectangle given in the question means Farmer John paints the area with one layer of paint.
You may assume that Farmer John always has sufficient paint to add one layer of paint to each rectangle.
You are asked to compute the total area that is covered by exactly K layers of paint, or in other words the total area covered by exactly K layers simultaneously.
Hope that helps,
Eric Liu
thx