import java.io.*;
import java.util.*;

public class prog {

	BufferedReader br;
	PrintWriter out;
	StringTokenizer st;
	boolean eof;

	void solve() throws IOException {
		int n = nextInt();
		int[] a = new int[n * n];
		for (int i = 0; i < n * n; i++) {
			a[i] = nextInt();
		}
		int[][] b = new int[n][n];
		Arrays.sort(a);
		int ptr = n * n - 1;
		for (int i = 0; i < n; i++) {
			b[i][i] = a[ptr--];
		}
		for (int i = 0; i < n; i++)
			for (int j = 0; j < n; j++) {
				if (i != j) {
					b[i][j] = a[ptr--];
				}
			}
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < n; j++) {
				out.print(b[i][j] + " " );
			}
			out.println();
		}
	}

	prog() throws IOException {
		br = new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(System.out);
		solve();
		out.close();
	}

	public static void main(String[] args) throws IOException {
		new prog();
	}

	String nextToken() {
		while (st == null || !st.hasMoreTokens()) {
			try {
				st = new StringTokenizer(br.readLine());
			} catch (Exception e) {
				eof = true;
				return null;
			}
		}
		return st.nextToken();
	}

	String nextString() {
		try {
			return br.readLine();
		} catch (IOException e) {
			eof = true;
			return null;
		}
	}

	int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}

	long nextLong() throws IOException {
		return Long.parseLong(nextToken());
	}

	double nextDouble() throws IOException {
		return Double.parseDouble(nextToken());
	}
}