import java.io.; import java.util.; import java.util.stream.*; import static java.util.stream.Collectors.joining; import static java.util.stream.Collectors.toList;

class Result {

/*
 * Complete the 'cavityMap' function below.
 *
 * The function is expected to return a STRING_ARRAY.
 * The function accepts STRING_ARRAY grid as parameter.
 */

public static List<String> cavityMap(List<String> grid) {
    int n = grid.size();
    List<String> result = new ArrayList<>(grid);

    for (int i = 1; i < n - 1; i++) {
        char[] row = grid.get(i).toCharArray();
        for (int j = 1; j < row.length - 1; j++) {
            int current = row[j] - '0';
            int top = grid.get(i - 1).charAt(j) - '0';
            int bottom = grid.get(i + 1).charAt(j) - '0';
            int left = row[j - 1] - '0';
            int right = row[j + 1] - '0';

            if (current > top && current > bottom && current > left && current > right) {
                row[j] = 'X';
            }
        }
        result.set(i, new String(row));
    }

    return result;
}

}

public class Solution { public static void main(String[] args) throws IOException { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

    int n = Integer.parseInt(bufferedReader.readLine().trim());

    List<String> grid = IntStream.range(0, n).mapToObj(i -> {
        try {
            return bufferedReader.readLine();
        } catch (IOException ex) {
            throw new RuntimeException(ex);
        }
    }).collect(toList());

    List<String> result = Result.cavityMap(grid);

    bufferedWriter.write(
        result.stream()
            .collect(joining("\n")) + "\n"
    );

    bufferedReader.close();
    bufferedWriter.close();
}

}