#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, s, e) for (int i = (int)(s); i < (int)(e); ++i)
#define all(a) (a).begin(),(a).end()

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    
    int N;
    cin >> N;
    int cnt = 0;
    rep(i, 0, N) rep(j, 0, N) {
        char A;
        cin >> A;
        if (A == '#') ++cnt;
    }
    
    if (N % 2 == 0 && cnt % 2 == 1) cout << "No\n";
    else cout << "Yes\n";
}