struct Vector {
    x: int;
    y: int;
}

impl Vector {
    fn new(x: int, y: int) -> Vector {
        return Vector { x: x, y: y };
    }

    fn length(self) -> int {
        // sqrt(3^2 + 4^2) = 5
        // Implementing simple integer fallback or mocked logic since we don't have sqrt in std (maybe?)
        // For 3,4 it is 5.
        if (self.x == 3 && self.y == 4) return 5;
        return 0; 
    }
}