using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
class Solution {
    static void Main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution */
        var magicalSquare = new int[3, 3];
            magicalSquare[0, 0] = 4;
            magicalSquare[0, 1] = 9;
            magicalSquare[0, 2] = 2;
            magicalSquare[1, 0] = 3;
            magicalSquare[1, 1] = 5;
            magicalSquare[1, 2] = 7;
            magicalSquare[2, 0] = 8;
            magicalSquare[2, 1] = 1;
            magicalSquare[2, 2] = 6;

            var square = new int[3][];

            square[0] = Console.ReadLine().Split(' ').Select(c => int.Parse(c)).ToArray();
            square[1] = Console.ReadLine().Split(' ').Select(c => int.Parse(c)).ToArray();
            square[2] = Console.ReadLine().Split(' ').Select(c => int.Parse(c)).ToArray();

            var answer = int.MaxValue;

            for (var i = 0; i < 8; i++)
            {
                var sumansw = 0;

                for (var j = 0; j < 3; j++)
                {
                    for (var m = 0; m < 3; m++)
                    {
                        sumansw += Math.Abs(square[j][m] - magicalSquare[j, m]);
                    }
                }

                if (sumansw < answer)
                    answer = sumansw;

                if (i < 3)
                {
                    var aux = magicalSquare[0, 1];
                    magicalSquare[0, 1] = magicalSquare[1, 0];
                    var aux1 = aux;
                    aux = magicalSquare[1, 2];
                    magicalSquare[1, 2] = aux1;
                    aux1 = aux;
                    aux = magicalSquare[2, 1];
                    magicalSquare[2, 1] = aux1;
                    magicalSquare[1, 0] = aux;
                    aux = magicalSquare[0, 2];
                    magicalSquare[0, 2] = magicalSquare[0, 0];
                    aux1 = aux;
                    aux = magicalSquare[2, 2];
                    magicalSquare[2, 2] = aux1;
                    aux1 = aux;
                    aux = magicalSquare[2, 0];
                    magicalSquare[2, 0] = aux1;
                    aux1 = aux;
                    aux = magicalSquare[0, 0];
                    magicalSquare[0, 0] = aux1;
                }
                else {
                    var aux = 0;
                    var aux1 = 0;

                    if (i == 3)
                    {
                        aux = magicalSquare[0, 1];
                        magicalSquare[0, 1] = magicalSquare[1, 0];
                        aux1 = aux;
                        aux = magicalSquare[1, 2];
                        magicalSquare[1, 2] = aux1;
                        aux1 = aux;
                        aux = magicalSquare[2, 1];
                        magicalSquare[2, 1] = aux1;
                        magicalSquare[1, 0] = aux;
                        aux = magicalSquare[0, 2];
                        magicalSquare[0, 2] = magicalSquare[0, 0];
                        aux1 = aux;
                        aux = magicalSquare[2, 2];
                        magicalSquare[2, 2] = aux1;
                        aux1 = aux;
                        aux = magicalSquare[2, 0];
                        magicalSquare[2, 0] = aux1;
                        aux1 = aux;
                        aux = magicalSquare[0, 0];
                        magicalSquare[0, 0] = aux1;

                        aux = magicalSquare[0, 0];
                        magicalSquare[0, 0] = magicalSquare[2, 0];
                        magicalSquare[2, 0] = aux;
                        aux = magicalSquare[0, 1];
                        magicalSquare[0, 1] = magicalSquare[2, 1];
                        magicalSquare[2,1 ] = aux;
                        aux = magicalSquare[2, 2];
                        magicalSquare[2, 2] = magicalSquare[0, 2];
                        magicalSquare[0, 2] = aux;

                        continue;

                    }

                    aux = magicalSquare[0, 1];
                    magicalSquare[0, 1] = magicalSquare[1, 0];
                    aux1 = aux;
                    aux = magicalSquare[1, 2];
                    magicalSquare[1, 2] = aux1;
                    aux1 = aux;
                    aux = magicalSquare[2, 1];
                    magicalSquare[2, 1] = aux1;
                    magicalSquare[1, 0] = aux;
                    aux = magicalSquare[0, 2];
                    magicalSquare[0, 2] = magicalSquare[0, 0];
                    aux1 = aux;
                    aux = magicalSquare[2, 2];
                    magicalSquare[2, 2] = aux1;
                    aux1 = aux;
                    aux = magicalSquare[2, 0];
                    magicalSquare[2, 0] = aux1;
                    aux1 = aux;
                    aux = magicalSquare[0, 0];
                    magicalSquare[0, 0] = aux1;
                }
            }
            Console.WriteLine(answer);
    }
}