#include <bits/stdc++.h>
using namespace std;

int main()
{
    int N;
    cin >> N;
    vector<string> A(N);
    for (int i = 0; i < N; i++)
    {
        cin >> A[i];
    }
    int count = 0;
    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < N; j++)
        {
            int k = N - j - 1;
            if (A[i][j] != A[i][k])
            {
                count++;
            }
        }
    }
    count /= 2;
    if (count % 2 == 0 || N % 2 == 1)
    {
        cout << "Yes";
    }
    else
    {
        cout << "No";
    }
}