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

public class Solution {

    public static int absolute(int a,int b)
        {
        if(a>=b)
            return a-b;
        return b-a;
        
    }
    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 cost=0;
        int arr[][]=new int[3][3];
      int n=3;
      Scanner scan=new Scanner(System.in);
      for(int i=0;i<n;i++)
          for(int j=0;j<n;j++)
              arr[i][j]=scan.nextInt();
     
          //check for magic square's center as equal to 5 or not..
          if(arr[1][1]!=5)
      {cost=cost +absolute(5,arr[1][1]);
      }
          //check for corner and maintain a array to check if the number is visited..
          
        //first check for [0][0] and [2][2]
      /*  if(arr[0][0]%2!=0||arr[2][0]%2!=0)
        {
            if(arr[0][0]%2!=0)
            {
               
                
                
            }
        }*
        int sum=0;
         for(int i=0;i<n;i++)
          for(int j=0;j<n;j++)
         { 
            if(!(i==1&&j==1))
                sum+=arr[i][j];
             
         }
     //   System.out.println(sum);
        cost+=absolute(40,sum);
       System.out.println(cost);/*/
           
       int squares[][] = {
        {6, 1, 8, 7, 5, 3, 2, 9, 4},
        {8, 1, 6, 3, 5, 7, 4, 9, 2},
        {8, 3, 4, 1, 5, 9, 6, 7, 2},
        {6, 7, 2, 1, 5, 9, 8, 3, 4},
        {2, 7, 6, 9, 5, 1, 4, 3, 8},
        {4, 3, 8, 9, 5, 1, 2, 7, 6},
        {4, 9, 2, 3, 5, 7, 8, 1, 6},
        {2, 9, 4, 7, 5, 3, 6, 1, 8}
    };
        Scanner scan=new Scanner(System.in);
        int given[]=new int[9];
        for(int i=0;i<9;i++)
            given[i]=scan.nextInt();
        //checking the min cost with each of the above 8 hardcoded magic squares
        int cost=Integer.MAX_VALUE;
        for(int i=0;i<8;i++)
            {
            int dummy=0;
            for(int j=0;j<9;j++)
                {
                dummy+=absolute(squares[i][j],given[j]);
            }
            if(dummy<cost)
                cost=dummy;
            
        }
        System.out.println(cost);
    }
}