N = int(input())
G = []
for i in range(N):
    A = list(input())
    G.append(A)

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

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

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