title: Algorithm for maximum non-dominated set
body: <p>FInd an algorithm for the next problem : 
  Given set S of n points in the 2D plane, a point (x1, y1) dominates another point (x2, y2) if x1 > x2 and y1 > y2. Find the largest set of points M such that M is a subset of S and no point of M is dominated by another point of S.</p>