0
______$$$$$$_________________________$$$___
_____$$$___$$_______________________$$$$$__
____$$$_____$$__$$___________________$$$___
____$$$_________$$_________________________
____$$$_____$$_____________________________
_____$$$___$$___________________$$_________
______$$$$$$____________________$$$________
_______________________________$$$$$_______
________________________________$$$$$______
_______________________________$$$$$$______
______________________________$$$$$$$______
_____________________________$$$$$$$$______
____________________________$$$$$$$$$$_____
___________________________$$$$$$$$$$$_____
_______________________ $$$$$$$$$$$$$$_____
____________________ $$$$$$$$$$$$$$$$______
__________________$$$$$$$$$$$$$$$$$$_______
_______________$$$$$$$$$$$$$$$$$$$$________
___________$$$$$$$$$$$$$$$$$$$$$$$_________
_________$$$$$$$$$$$$$$$$$$$$$$$$__________
_______$$$$$$$$$$$$$$$$$$$$$$$$$___________
______$$$$_$$$$$$$$$$$$$$__$$$$$___________
_____$$$$__$$$$$$$$$$$$$___$$$$$___________
____$$$___$$$____$$________$$_$$___________
_____$___$$$______$$_______$$_$$___________
________$$$________$$__$$$$$$_$$$$$________
_______$$$____$$$$$$$$$$$$$$$$$$$$$$_______
_____$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$______
___$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$_____
___$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$______