/* -*- coding: utf-8 -*-
 *
 * 3125.cc:  No.3125 Make It Symmetry - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* constant */

const int MAX_N = 500;

/* typedef */

/* global variables */

char s[MAX_N + 4];

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);

  int cnt = 0;
  for (int i = 0; i < n; i++) {
    scanf("%s", s);
    for (int j = 0; j < n; j++)
      if (s[j] == '#') cnt++;
  }

  if (! (n & 1) && (cnt & 1)) puts("No");
  else puts("Yes");
  
  return 0;
}