Problem: Recently Pashmak has been employed in a transportation company. The company has k buses and has a contract with a school which has n students. The school planned to take the students to d different places for d days (each day in one place). Each day the company provides all the buses for the trip. Pashmak has to arrange the students in the buses. He wants to arrange the students in a way that no two students become close friends. In his ridiculous idea, two students will become close friends if and only if they are in the same buses for all d days.

Please help Pashmak with his weird idea. Assume that each bus has an unlimited capacity.

Input

The first line of input contains three space-separated integers n, k, d (1 ≤ n, d ≤ 1000; 1 ≤ k ≤ 109).

Output

If there is no valid arrangement just print -1. Otherwise print d lines, in each of them print n integers. The j-th integer of the i-th line shows which bus the j-th student has to take on the i-th day. You can assume that the buses are numbered from 1 to k.

Examples

Input

3 2 2


Output

1 1 2 
1 2 1 


Input

3 2 1


Output

-1

Note

Note that two students become close friends only if they share a bus each day. But the bus they share can differ from day to day.

Solution (in JAVA):

Solution:
import java.io.*;
import java.util.*;
import java.util.List;

public class Main {
    private static StringTokenizer st;
    private static BufferedReader br;
    public static long MOD = 1000000007;

    public static void print(Object x) {
        System.out.println(x + "");
    }
    public static String join(List<?> x, String space) {
        StringBuilder sb = new StringBuilder();
        for (Object elt : x) {
            sb.append(elt);
            sb.append(space);
        }
        return sb.toString();
    }

    public static String nextToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine().trim());
        }
        return st.nextToken();
    }
    public static double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }
    public static long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }
    public static int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }
    public static List<Double> nextDoubles(int n) throws IOException{
        List<Double> lst = new ArrayList<Double>();
        for (int i = 0; i < n; i++) {
            lst.add(nextDouble());
        }
        return lst;
    }
    public static List<Integer> nextInts(int n) throws IOException{
        List<Integer> lst = new ArrayList<Integer>();
        for (int i = 0; i < n; i++) {
            lst.add(nextInt());
        }
        return lst;
    }
    public static List<Long> nextLongs(int n) throws IOException{
        List<Long> lst = new ArrayList<Long>();
        for (int i = 0; i < n; i++) {
            lst.add(nextLong());
        }
        return lst;
    }

    public static List<Integer> emptyList(int n, int val) {
        List<Integer> lst = new ArrayList<Integer>();
        for (int i = 0; i < n; i++) {
            lst.add(val);
        }
        return lst;
    }

    public static String solve(int n, int k, int d) {
        if (n == 1) {
            for (int i = 0; i < d; i++) print("1");
            return "";
        }
        if (k == 1) {
            return "-1";
        }

        int maxDay = 1;
        long val = k;
        while (val < n) {
            maxDay += 1;
            val *= k;
        }
        if (maxDay > d) return "-1";

        for (int i = 0; i < d; i++) {
            if (i < maxDay) {
                int rollover = (int) Math.pow(k, i);
                int bus = 0;
                int counter = 0;
                StringBuilder s = new StringBuilder();
                for (int student = 0; student < n; student++) {
                    s.append((bus + 1) + " ");
                    counter++;
                    if (counter == rollover) {
                        counter = 0;
                        bus = (bus + 1) % k;
                    }
                }
                print(s.toString());
            } else {
                StringBuilder s = new StringBuilder();
                for (int j = 0; j < n; j++) {
                    s.append("1 ");
                }
                print(s.toString());
            }
        }
        return "";
    }

    public static void main(String[] args) throws Exception {
        //long time = System.currentTimeMillis();
        boolean debug = false;
        InputStream in = System.in;
        if (debug) {
            in = new FileInputStream("input.in");
        }
        br = new BufferedReader(new InputStreamReader(in));

        int n = nextInt();
        int k = nextInt();
        int d = nextInt();
        print(solve(n, k, d));
    }
}