백준 #1074 - Z

 

	N,r,c = map(int, input().split(' '))
	count = 0
	def divide(size, x, y):
	global count
	if size <= 2:
	if(x==r and y==c):
	print(count)
	return
	count+=1
	if(x==r and y+1==c):
	print(count)
	return
	count+=1
	if(x+1==r and y==c):
	print(count)
	return
	count+=1
	if(x+1==r and y+1==c):
	print(count)
	return
	count+=1
	return
	divide((size//2), x,y) ## size-1로 하면 index 이동할때 계산 불편
	divide((size//2), x,y+(size//2))
	divide((size//2), x+(size//2),y)
	divide((size//2), x+(size//2),y+(size//2))
	if __name__=="__main__":
	divide(2**N,0,0)

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