INT = lambda : int(input())
MI = lambda : map(int, input().split())
MI_DEC = lambda : map(lambda x : int(x)-1, input().split())
LI = lambda : list(map(int, input().split()))
LI_DEC = lambda : list(map(lambda x : int(x)-1, input().split()))
INF = float('inf')
CEIL = lambda a, b : (a + b - 1) // b

N = INT()
A = [input() for i in range(N)]

if N % 2 == 1:
    print('Yes')
    exit(0)

cnt = 0
for i in range(1, N+1):
    for j in range(1, N//2+1):
        if A[i-1][j-1] != A[i-1][N-j]:
            cnt += 1

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