public string[] ProcessTask(string[] stdIn)
{
var c1 = Parse.ParseCount(stdIn[0]);
var pts1 = Parse.ParseIntCoordinates(stdIn[1], c1);
var c2 = Parse.ParseCount(stdIn[2]);
var pts2 = Parse.ParseIntCoordinates(stdIn[3], c2);
var p1 = new Polygon2d(pts1);
var p2 = new Polygon2d(pts2);
string[] results = new string[2];
var hull = Polygon2d.Intersects(p1, p2);
results[0] = hull.Count.ToString();
results[1] = hull.Select(n => $"{n.X.ToString()} {n.Y.ToString()}").Aggregate((n, m) => m + ' ' + n);
return(results);
}