import sys
input = sys.stdin.readline
N = int(input())
A = [input().strip() for _ in range(N)]
cnt = 0
for i in range(N):
    for j in range(N//2):
        if A[i][j]!=A[i][N-1-j]:
            cnt += 1
if cnt%2==0 or N%2==1:
    print("Yes")
else:
    print("No")