import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class prog {




    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));


        String s = br.readLine();
        int n = Integer.parseInt(s);
        int ns = n * n;
        String s2 = br.readLine();
        String[] split = s2.split(" ");
        List<Integer> list = new ArrayList<Integer>(ns);
        for (String nrs : split) {
            if (nrs != null) {
                list.add(Integer.parseInt(nrs));
            }
        }

        Collections.sort(list, Collections.reverseOrder());
        int [] [] a = new int[n][n];
        for (int i = 0; i < n; i++) {
            a[i][i] = list.get(i);
        }

//        list.removeAll(list.subList(0, n));
        for (int i = 0; i < n; i++) {
            list.remove(0);
        }

        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                if (i != j) {
                    a[i][j] = list.remove(0);
                }
            }
        }

        int nm1 = n -1;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < nm1; j++) {
                System.out.print(a[i][j] + " ");
            }
            System.out.println(a[i][n-1]);
        }

    }



}