<?php
$x1 = (float)readline();
$y1 = (float)readline();
$x2 = (float)readline();
$y2 = (float)readline();
$a = $x1 - $x2;
$b = $y2 - $y1;
$area = $a * $b;
$perimeter = (2 * $a) + (2 * $b);
echo "Area = " . $area . PHP_EOL;
echo "Perimeter = " . $perimeter;