public static void Main()
var x1=double.Parse(Console.ReadLine());
var x2=double.Parse(Console.ReadLine());
var y1=double.Parse(Console.ReadLine());
var y2=double.Parse(Console.ReadLine());
Console.WriteLine(Math.Abs((x1-x2)*(y1-y2)));
Console.WriteLine(Math.Abs(2*((x1-x2)+(y1-y2))));