#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> P;
#define REP(i,n) for(ll i=0;i<ll(n);i++)




ll a[510][510];




int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j;




	ll N;
	cin >> N;


	if(N==1){
		cout << "Yes" << endl;
		return 0;
	}

	ll s=0;
	for(i=1;i<=N;i++){
		for(j=1;j<=N;j++){
			char c;
			cin >> c;
			if(c=='#'){
				a[i][j]=1;
				s++;
			}
		}
	}



	ll d=N;
	for(i=1;i<=N;i++){
		for(j=1;j<=N;j++){
			if(a[i][j]==0) continue;
			if(a[i][j]==a[i][N+1-j]){
				if(N%2==0) s-=2;
				else{
					if(j==(N+1)/2){
						s--;
						d--;
					}
					else s-=2;
				}
			}
		}
	}


	if(s%2==0) cout << "Yes" << endl;
	else{
		if(N%2==0) cout << "No" << endl;
		else{
			if(d!=0) cout << "Yes" << endl;
			else cout << "No" << endl;
		}
	}








	return 0;

}