#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ll long long
#define mod 998244353
int main(){
    cin.tie(0)->sync_with_stdio(0);
    cout.tie(0);
    int N;
    char A[509][509];
    cin>>N;
    for(int i=1;i<=N;i++){
        for(int j=1;j<=N;j++) cin>>A[i][j];
    }
    int shape=0;
    for(int i=1;i<=N;i++){
        for(int j=1;j<=N;j++){
            if(A[i][j]=='#') shape++;
        }
    }
    shape%=N;
    if(N%2==0){
        if(shape%2==0) cout<<"Yes"<<endl;
        else cout<<"No"<<endl;
    }
    else{
        cout<<"Yes"<<endl;
    }
}