阻挡广告牌

using namespace std;
#define x first
#define y second
typedef pair<int, int> PII;
const int N = 1e6 + 10;
PII x ={1000, -1000} , y = {-1000, 1000}, xx = {1000, -1000}, yy = {-1000,1000};
int main()
{
    PII a[2], b[2],c[2];
    cin >> a[0].x >>a[0].y >>a[1].x >>a[1].y; 
    cin >> b[0].x >>b[0].y >>b[1].x >>b[1].y; 
    cin >> c[0].x >>c[0].y >>c[1].x >>c[1].y; 
    bool t = false, tt = false;
    for(int i = c[0].x; i <= c[1].x; i ++)
    {
        for(int j = c[0].y; j <= c[1].y; j ++)
        {
            if(i >= a[0].x && i <= a[1].x && j >= a[0].y && j <= a[1].y)
            {
                t = true;
                if(i <= x.x && j >=x.y)
                {
                    x = {i, j};
                }
                if(i >= y.x&&j <= y .y)
                {
                    y = {i,j};
                }
            }
            if(i >= b[0].x && i <= b[1].x && j >= b[0].y && j <= b[1].y)
            {
                tt = true;
                if(i <= xx.x&&j >=xx.y)
                {
                    xx = {i, j};
                }
                if(i >= yy.x&&j <= yy .y)
                {
                    yy = {i,j};
                }
            }
        }
    }
    int ans = (abs(a[0].x - a[1].x)) * (abs(a[1].y - a[0].y)) + (abs(b[0].x - b[1].x)) * (abs(b[1].y - b[0].y));
    if(t) ans -=  (abs(y.x - x.x)) * (abs(y.y - x.y));
    if(tt) ans -= (abs(yy.y - xx.y)) * (abs(yy.x - xx.x));
     cout << ans << endl;
}