code

#include<bits/stdc++.h>
using namespace std;
int n;
char a[2][1005][1005],b[1005][1005];
void f(int x){
	if(x == 1){
		for(int i = 1;i <= n;i++){
			for(int j = 1,k = n;j <= n;j++,k--){
				a[2][i][j] = a[1][k][i];
			}
		}
	}else{
		for(int i = 1;i <= n;i++){
			for(int j = 1,k = n;j <= n;j++,k--){
				a[1][i][j] = a[2][k][i];
			}
		}
	}
}
int main(){
	cin >> n;
	for(int i = 1;i <= n;i++)
		for(int j = 1;j <= n;j++)
			cin >> a[1][i][j];
	for(int i = 1;i <= n;i++)
		for(int j = 1;j <= n;j++) 
			cin >> b[i][j];
	f(1);
	for(int i = 1;i <= n;i++)
		for(int j = 1;j <= n;j++)
			if(a[1][i][j] == 'O') cout<<b[i][j];
	for(int i = 1;i <= n;i++)
		for(int j = 1;j <= n;j++)
			if(a[2][i][j] == 'O') cout<<b[i][j];
	f(2);
	f(1);
	for(int i = 1;i <= n;i++)
		for(int j = 1;j <= n;j++)
			if(a[1][i][j] == 'O') cout<<b[i][j];
	for(int i = 1;i <= n;i++)
		for(int j = 1;j <= n;j++)
			if(a[2][i][j] == 'O') cout<<b[i][j];
	return 0;
}