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

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner in = new Scanner(System.in);
        int arr[][] = new int[3][3];
        int cost = 72;
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                arr[i][j] = in.nextInt();
            }            
        }
        int middle = arr[1][1];
        if (middle != 5) {
            arr[1][1] = 5;
            cost = Math.abs(5 - middle);
        }
        
    }
}