Rectangle Area

反向思维即可

class Solution(object):
    def computeArea(self, A, B, C, D, E, F, G, H):
        """
        :type A: int
        :type B: int
        :type C: int
        :type D: int
        :type E: int
        :type F: int
        :type G: int
        :type H: int
        :rtype: int
        """
        total = (C - A) * (D - B) + (G - E) * (H - F)
        if G <= A or E >= C:
            return total
        if F >= D or H <= B:
            return total
        overLap = (min(H, D) - max(F, B)) * (min(C, G) - max(E, A))
        return total - overLap