using System;

public enum DIR
{
    DIR_NOT = -1,
    DIR_UP = 0,
    DIR_DOWN = 1,
    DIR_LEFT = 2,
    DIR_RIGHT = 3,
    DIR_LEFTUP = 4,
    DIR_RIGHTUP = 5,
    DIR_LEFTDOWN = 6,
    DIR_RIGHTDOWN = 7
}