'''

class Solution {

public:

==int computeArea(int A, int B, int C, int D, int E, int F, int G, int H) {

====long long a = A, b = B, c = C, d = D, e = E, f = F, g = G, h = H;

====long long hor = min(c, g) - max(a, e), ver = min(d, h) - max(b, f);

====return llabs((c - a) * (d - b)) + llabs((g - e) * (h - f)) - max(0LL, hor) * max(0LL, ver);

==}

};

'''