#include <bits/stdc++.h>
#include <stdio.h>
using namespace std;
long long int LMINF =  -1e18;
long long int modint = 1000000007;

int main() {
    int n;
    cin >> n;
    vector<vector<char>> A(n,vector<char>(n));
    int count = 0;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            cin >> A[i][j];
            if(A[i][j] == '#'){
                count++;
            }
        }
    }
    if(n%2 == 0){
        if(count%2 == 0) {
            cout << "Yes";
        } else {
            cout << "No";
        }
    } else {
        cout << "Yes";
    }
}