题目：

题解：

func computeArea(ax1, ay1, ax2, ay2, bx1, by1, bx2, by2 int) int {
    area1 := (ax2 - ax1) * (ay2 - ay1)
    area2 := (bx2 - bx1) * (by2 - by1)
    overlapWidth := min(ax2, bx2) - max(ax1, bx1)
    overlapHeight := min(ay2, by2) - max(ay1, by1)
    overlapArea := max(overlapWidth, 0) * max(overlapHeight, 0)
    return area1 + area2 - overlapArea
}

func min(a, b int) int {
    if a > b {
        return b
    }
    return a
}

func max(a, b int) int {
    if b > a {
        return b
    }
    return a
}