static string IsCross(Cricle c,Triangle t)
{
var d1 = SquareDis(c.xc, c.yc, t.GetPointX(0), t.GetPointY(0));
var d2 = SquareDis(c.xc, c.yc, t.GetPointX(1), t.GetPointY(1));
var d3 = SquareDis(c.xc, c.yc, t.GetPointX(2), t.GetPointY(2));
var RSquare = c.R * c.R;
if ((d1 < RSquare && d2 < RSquare && d3 < RSquare) )
{
return "NO";
}
else if ((d1 > RSquare && d2 > RSquare && d3 > RSquare))
{
if (IsTouch(c, t.GetPointX(0), t.GetPointY(0), t.GetPointX(1), t.GetPointY(1))||
IsTouch(c, t.GetPointX(0), t.GetPointY(0), t.GetPointX(2), t.GetPointY(2))||
IsTouch(c, t.GetPointX(2), t.GetPointY(2), t.GetPointX(1), t.GetPointY(1)))
return "YES";
return "NO";
}
else {
return "YES";
}
}
public static Triangle Create()
{
var t = new Triangle();
for (int i = 0; i < 3; i++) {
string s = Console.ReadLine();
t.SetPoint(Convert.ToInt32(s.Split(' ')[0]), Convert.ToInt32(s.Split(' ')[1]));
}
return t;
}
