n=int(input())
c=0
for i in range(n):
	s=input()
	c+=s.count("#")
if c==0:
	print("Yes")
	exit()
if n%2:
	for i in range(1,n+1):
		c-=1
		if c>=0 and c%2==0:
			print("Yes")
			exit()
	print("No")
else:
	print(["No","Yes"][c%2==0])