N = int(input())
A = [list(input()) for _ in range(N)]

if N % 2 == 1:
  print("Yes")
  exit()

a = 0
for i in range(N):
  for j in range(N):
    if A[i][j] == "#":
      a += 1

if a % 2 == 1:
  print("No")
else:
  print("Yes")