n = int(input())
alist = [input() for i in range(n)]

if n == 1:
    print("Yes")
    exit()

cnt = 0
for i in range(n):
    for j in range(n):
        if alist[i][j] == "#":
            cnt += 1
        else:
            pass


if (n % 2) == 0:
    if (cnt % 2) == 1:
        print("No")
    else:
        print("Yes")
else:
    print("Yes")