0
__________________________________________________
_____________________$$$$$$$______________________
______________________$$$$$_______________________
______________________$$$$$_______________________
______________________$$$$$_______________________
______________________$$$$$_______________________
______________________$$$$$_______________________
______________________$$$$$_______________________
_____________________$$$$$$$______________________
$$$_______$$$_____$$$___$$$_______$$$_$$$$$$$$$$$_
$$$_____$$$$$$$$$$$$$$$_$$$_______$$$_$$$$$$$$$$$_
$$$____$$$____$$$____$$$_$$$_____$$$__$$$_________
$$$____$$$___________$$$_$$$_____$$$__$$$_________
$$$_____$$$_________$$$___$$$___$$$___$$$$$$$$____
$$$______$$$_______$$$_____$$$_$$$____$$$_________
$$$_______$$$_____$$$______$$$_$$$____$$$_________
$$$$$$$$$___$$$_$$$_________$$$$$_____$$$$$$$$$$$_
$$$$$$$$$_____$$$____________$$$______$$$$$$$$$$$_
__$$$_______$$$___$$$_____$$$____$$$______$$$_____
___$$$_____$$$__$$$$$$$$$$$$$$$__$$$______$$$_____
____$$$___$$$__$$$____$$$____$$$_$$$______$$$_____
_____$$$_$$$___$$$___________$$$_$$$______$$$_____
______$$$$$_____$$$_________$$$__$$$______$$$_____
_______$$$_______$$$_______$$$___$$$______$$$_____
_______$$$________$$$_____$$$____$$$______$$$_____
_______$$$__________$$$_$$$_______$$$$$$$$$$______
_______$$$____________$$$__________$$$$$$$$_______