#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

void solve() {
  ll n;
  cin >> n;
  vector<string> s(n);
  rep(i, n) cin >> s[i];
  if (n % 2 == 1) {
    cout << "Yes\n";
    return;
  }
  ll x = 0;
  rep(i, n) {
    rep(j, n) {
      ll k = n - j - 1;
      if (j < k && s[i][j] != s[i][k])
        x++;
    }
  }
  cout << ((x % 2 == 0) ? "Yes" : "No") << '\n';
}

int main() {
  std::cin.tie(nullptr);
  std::ios_base::sync_with_stdio(false);
  int T = 1;
  for (int t = 0; t < T; t++) {
    solve();
  }
  return 0;
}