import java.util.Arrays;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 * @author George Marcus
 */
public class prog {
	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Domimatrix solver = new Domimatrix();
		solver.solve(1, in, out);
		out.close();
	}
}

class Domimatrix {
    public void solve(int testNumber, InputReader in, PrintWriter out) {
        int N = in.nextInt();
        Integer[] A = new Integer[N * N];
        for (int i = 0; i < N * N; i++) {
            A[i] = in.nextInt();
        }
        Arrays.sort(A);
        int[][] B = new int[N][N];
        for (int i = 0; i < N; i++) {
            B[i][i] = A[N * N - 1 - i];
        }
        int k = 0;
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < N; j++) {
                if (i != j) {
                    B[i][j] = A[k++];
                }
            }
        }

        for (int i = 0; i < N; i++) {
            for (int j = 0; j < N; j++) {
                out.print(B[i][j] + " ");
            }
            out.println();
        }
    }
}

class InputReader {
    private InputStream stream;
    private byte[] buf = new byte[1024];
    private int curChar;
    private int numChars;

    public InputReader(InputStream stream) {
        this.stream = stream;
    }

    public int read() {
        if (numChars == -1)
            throw new InputMismatchException();
        if (curChar >= numChars) {
            curChar = 0;
            try {
                numChars = stream.read(buf);
            } catch (IOException e) {
                throw new InputMismatchException();
            }
            if (numChars <= 0)
                return -1;
        }
        return buf[curChar++];
    }

    public int nextInt() {
        return Integer.parseInt(nextString());
    }

    public String nextString() {
        int c = read();
        while (isSpaceChar(c))
            c = read();
        StringBuffer res = new StringBuffer();
        do {
            res.appendCodePoint(c);
            c = read();
        } while (!isSpaceChar(c));

        return res.toString();
    }

    private boolean isSpaceChar(int c) {
        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
    }

}