centers.push_back(Point( 0, -1.5)); radii.push_back(2.5); weights.push_back(1);
centers.push_back(Point(-2, 1)); radii.push_back(2.5); weights.push_back(1);
centers.push_back(Point( 2, 1)); radii.push_back(2.5); weights.push_back(1);
centers.push_back(Point( 0, -1.5)); radii.push_back(2.5); weights.push_back(1);
centers.push_back(Point(-2, 1)); radii.push_back(2.5); weights.push_back(1);
centers.push_back(Point( 2, 1)); radii.push_back(2.5); weights.push_back(1);