class Cursor:
    def __init__(self) -> None:
        self._pos = 0

    def resete(self) -> None:
        set._pos = 0

    def up(self) -> None:
        self._pos -= 1 if self.pos >= 1 else 0

    def down(self, max: int) -> None:
        self._pos = min(self.pos + 1, max - 1)

    @property
    def pos(self) -> int:
        return self._pos