import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

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. */
        int[][] matrix = new int[3][3];
        Scanner sc = new Scanner(System.in);
        
        for(int r=0; r<3; r++){
            for(int c=0; c<3; c++){
                matrix[r][c] = sc.nextInt();
            }
        }
        
        int minCost = Integer.MAX_VALUE;
        int[] corners1 = new int[]{2,4,8,6};
        int[] sides1 = new int[]{9,3,1,7};
        int[] corners2 = new int[]{2,6,8,4};
        int[] sides2 = new int[]{7,1,3,9};
        int currentCost = 0;
        
        for(int i=0; i<4; i++){
            currentCost = 0;
            currentCost += Math.abs(matrix[1][1] - 5);
            currentCost += Math.abs(matrix[0][0] - corners1[(i + 4) % 4]);
            currentCost += Math.abs(matrix[1][0] - sides1[(i + 4) % 4]);
            currentCost += Math.abs(matrix[2][0] - corners1[((i + 1) + 4) % 4]);
            currentCost += Math.abs(matrix[2][1] - sides1[((i + 1) + 4) % 4]);
            currentCost += Math.abs(matrix[2][2] - corners1[((i + 2) + 4) % 4]);
            currentCost += Math.abs(matrix[1][2] - sides1[((i + 2) + 4) % 4]);
            currentCost += Math.abs(matrix[0][2] - corners1[((i + 3) + 4) % 4]);
            currentCost += Math.abs(matrix[0][1] - sides1[((i + 3) + 4) % 4]);
            if(currentCost < minCost){
                minCost = currentCost;
            }
        }
        
        for(int i=0; i<4; i++){
            currentCost = 0;
            currentCost += Math.abs(matrix[1][1] - 5);
            currentCost += Math.abs(matrix[0][0] - corners2[(i + 4) % 4]);
            currentCost += Math.abs(matrix[1][0] - sides2[(i + 4) % 4]);
            currentCost += Math.abs(matrix[2][0] - corners2[((i + 1) + 4) % 4]);
            currentCost += Math.abs(matrix[2][1] - sides2[((i + 1) + 4) % 4]);
            currentCost += Math.abs(matrix[2][2] - corners2[((i + 2) + 4) % 4]);
            currentCost += Math.abs(matrix[1][2] - sides2[((i + 2) + 4) % 4]);
            currentCost += Math.abs(matrix[0][2] - corners2[((i + 3) + 4) % 4]);
            currentCost += Math.abs(matrix[0][1] - sides2[((i + 3) + 4) % 4]);
            if(currentCost < minCost){
                minCost = currentCost;
            }
        }
        
        System.out.println(minCost);
        
    }
}