struct Point {
int x, y;
};

struct Rectangle {
Point topLeft;
Point bottomRight;
};

int main() {
Rectangle rect = {{10, 10}, {20, 20}};
rect.topLeft.x = 5;
Point* p = &rect.bottomRight;
p->y = 5;
cout << rect.topLeft.x + rect.bottomRight.y;
return 0;
}