test

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

public class Main {

    static List<List<Integer>> stores = new ArrayList<>();
    static List<List<Integer>> houses = new ArrayList<>();
    static List<List<Integer>> storeIndexCombis = new ArrayList<>();
    static List<Integer> list = new ArrayList<>();
    static int M;
    static int storeCnt = 0;
    static int loofCnt = 0;

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

        int N = Integer.parseInt(st.nextToken());
        M = Integer.parseInt(st.nextToken());

        for (int i = 0; i < N; i++) {
            st = new StringTokenizer(br.readLine());
            for (int j = 0; j < N; j++) {
                int input = Integer.parseInt(st.nextToken());
                if (input == 1) {
                    houses.add(List.of(i, j));
                }
                if (input == 2) {
                    stores.add(List.of(i, j));
                    storeCnt++;
                }
            }
        }

        createStoreIndexCombi(M, 0);

        int minDsum = Integer.MAX_VALUE;
        for (int i = 0; i < storeIndexCombis.size(); i++) {
            List<Integer> combi = storeIndexCombis.get(i);

            int houseDsum = 0;
            for (int j = 0; j < houses.size(); j++) {
                List<Integer> house = houses.get(j);
                int houseX = house.get(0);
                int houseY = house.get(1);

                int minCsum = Integer.MAX_VALUE;
                for (int k = 0; k < combi.size(); k++) {
                    List<Integer> store = stores.get(combi.get(k));
                    int storeX = store.get(0);
                    int storeY = store.get(1);

                    int minSum = Math.abs(houseX - storeX) + Math.abs(houseY - storeY);
                    if (minCsum > minSum) {
                        minCsum = minSum;
                    }
                }

                houseDsum += minCsum;
            }

            if (minDsum > houseDsum) {
                minDsum = houseDsum;
            }
        }

        System.out.println(minDsum);

        br.close();
    }

    private static void createStoreIndexCombi(int choose, int previous) {

        if (choose == 0) {
            storeIndexCombis.add(List.copyOf(list));
            return;
        }

        if (storeCnt == 1) {
            previous = -1;
        }
        for (int i = previous + 1; i < storeCnt; i++) {
                if (loofCnt == 0) {
                i = 0;
                loofCnt++;
            }

            list.add(i);
            createStoreIndexCombi(choose - 1, i);
            list.remove(list.size() - 1);
        }
    }
}