import java.util.*;

public class Solution {

    public  static char[][] convertArray(List<String> grid){
        int n = grid.size();
        char[][] arr = new char[n][n];
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                char num = grid.get(i).charAt(j);
                arr[i][j]=num;
            }
        }
        return arr;
    }

    public static void cavityMap(List<String> grid) {
        char[][] arr = convertArray(grid);
        int n = arr.length;
        for(int i=1;i<n-1;i++){
            for(int j=1;j<n-1;j++){
                int target =  arr[i][j]-'0';
                int up =  arr[i-1][j]-'0';
                int down =  arr[i+1][j]-'0';
                int left =  arr[i][j-1]-'0';
                int right =  arr[i][j+1]-'0';
                if(up < target && down < target && left < target && right < target){
                    arr[i][j]='X';
                }
            }
        }
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                System.out.print(arr[i][j]);
            }
            System.out.println();
        }
    }

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        List<String> list = new ArrayList<String>();
        for(int i=0;i<n;i++){
            list.add(sc.next());
        }
        cavityMap(list);
        sc.close();
    }
}