test

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class _20150208_LegoBlocks {

    public static void main(String[] args) {

        try (Scanner scanner = new Scanner(System.in);) {
            int numberOfLines = scanner.nextInt();
            scanner.nextLine();

            List<List<String>> leftBlock = new ArrayList<>();
            List<List<String>> rightBlock = new ArrayList<>();

            for (int i = 0; i < numberOfLines; i++) {
                List<String> temp = Stream.of(
                        scanner.nextLine().trim().split("\\W+")).collect(
                        Collectors.toList());

                leftBlock.add(temp);
            }
            for (int i = 0; i < numberOfLines; i++) {
                List<String> temp = Stream
                        .of(scanner.nextLine().trim().split("\\W+"))
                        .sorted(Collections.reverseOrder())
                        .collect(Collectors.toList());

                rightBlock.add(temp);

            }
            boolean formMatrix = true;

            long matrixLenght = leftBlock.get(0).size()
                    + rightBlock.get(0).size();
            long countSize = matrixLenght;
            if (matrixLenght == 0) {
                formMatrix = false;
            }
            for (int i = 1; i < numberOfLines; i++) {
                if (matrixLenght != (leftBlock.get(i).size() + rightBlock
                        .get(i).size())) {
                    formMatrix = false;
                }
                countSize += (leftBlock.get(i).size() + rightBlock.get(i)
                        .size());
            }
            if (formMatrix) {
                for (int i = 0; i < numberOfLines; i++) {
                    System.out.print("[");
                    System.out
                            .printf("%s", String.join(", ", leftBlock.get(i)));
                    System.out.print(", ");
                    System.out.printf("%s",
                            String.join(", ", rightBlock.get(i)));
                    System.out.println("]");
                }
            } else {
                System.out
                        .printf("The total number of cells is: %d", countSize);
            }
        } catch (Exception e) {
            System.out.println(e.toString());
        }
    }
}