import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());
        ArrayList<Integer> arr[][] = new ArrayList[n][n];
        for(int i = 0; i < n; i++){
            for(int j = 0; j < n; j++){
                arr[i][j] = new ArrayList<Integer>();
            }
        }
        for(int i = 0; i < n; i++){
            String[] line = br.readLine().split(" ");
            for(int j = 0; j < n; j++){
                arr[Integer.parseInt(line[j])-1][i].add(j);
            }
        }
        int ans = 0;
        for(int i = 0; i < n; i++){
            int sum[] = new int[n];
            for(int j = 0; j < n; j++){
                for(int k : arr[i][j]){
                    sum[j] += k;
                }
            }
            int down[] = new int[n], tmp[] = new int[n];
            int val = 0, acc = 0;
            for(int j = 0; j < n; j++){
                for(int k : arr[i][j]){
                    if(j+k+1 < n)   tmp[j+k+1]++;
                }
                val += sum[j];
                acc += tmp[j];
                val += acc;
                down[j] = val;
            }
            int up[] = new int[n];
            Arrays.fill(tmp, 0);
            val = 0;
            acc = 0;
            for(int j = n-1; j >= 0; j--){
                for(int k : arr[i][j]){
                    if(j-k-1 >= 0)  tmp[j-k-1]++;
                }
                val += sum[j];
                acc += tmp[j];
                val += acc;
                up[j] = val;
            }
            int score = 1<<30;
            for(int j = 0; j < n; j++){
                score = Math.min(score, down[j]+up[j]-sum[j]);
            }
            ans += score;
        }
        System.out.println(ans);
    }
}