题目：
题解：
int computeArea(int ax1, int ay1, int ax2, int ay2, int bx1, int by1, int bx2, int by2) {int area1 = (ax2 - ax1) * (ay2 - ay1), area2 = (bx2 - bx1) * (by2 - by1);int overlapWidth = fmin(ax2, bx2) - fmax(ax1, bx1), overlapHeight = fmin(ay2, by2) - fmax(ay1, by1);int overlapArea = fmax(overlapWidth, 0) * fmax(overlapHeight, 0);return area1 + area2 - overlapArea;
}
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