using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

class Solution {
    //Siamese method
    private static int[,] MagicSquare
    {
        get
        {
            var matrix = new int[3, 3];
            matrix[0, 1] = 1;
            matrix[2, 2] = 1 + 1;
            matrix[1, 0] = 1 + 2;
            matrix[2, 0] = 1 + 3;
            matrix[1, 1] = 1 + 4;
            matrix[0, 2] = 1 + 5;
            matrix[1, 2] = 1 + 6;
            matrix[0, 0] = 1 + 7;
            matrix[2, 1] = 1 + 8;

            return matrix;
        }
    }

    private static int[,] Rotate(int[,] square)
    {
        var rotate = new int[3, 3];

        rotate[0, 1] = square[0, 0];
        rotate[1, 2] = square[0, 1];
        rotate[2, 2] = square[0, 2];
        rotate[2, 1] = square[1, 2];
        rotate[2, 0] = square[2, 2];
        rotate[1, 0] = square[2, 1];
        rotate[0, 0] = square[2, 0];
        rotate[0, 1] = square[1, 0];
        rotate[0, 2] = square[0, 0];
        rotate[1, 1] = square[1, 1];

        return rotate;
    }

    private static int[,] Flip(int[,] square)
    {
        var flip = new int[3, 3];

        for (var i = 0; i < 3; i++)
        {
            for (var j = 0; j < 3; j++)
            {
                flip[i, j] = square[i, 2 - j];
            }
        }

        return flip;
    }

    private static int Cost(int[,] square, int[,] magicSquare)
    {
        var cost = 0;
        for (var i = 0; i < 3; i++)
        {
            for (var j = 0; j < 3; j++)
            {
                cost += Math.Abs(square[i, j] - magicSquare[i, j]);
            }
        }

        return cost;
    }

    private static int MinCost(int[,] square)
    {
        var magicSquare = MagicSquare;
        var minCost = Math.Min(int.MaxValue, Cost(square, magicSquare));
        for (var i = 0; i < 4; i++)
        {
            magicSquare = Flip(magicSquare);
            minCost = Math.Min(minCost, Cost(square, magicSquare));
            magicSquare = Flip(magicSquare);
            magicSquare = Rotate(magicSquare);
            minCost = Math.Min(minCost, Cost(square, magicSquare));
        }

        return minCost;
    }

    static void Main(string[] args)
    {
        var square = new int[3, 3];

        for (var i = 0; i < 3; i++)
        {
            var values = Console.ReadLine().Split(' ').Select(x => Convert.ToInt32(x)).ToArray();
            for (var j = 0; j < 3; j++)
            {
                square[i, j] = values[j];
            }
        }

        Console.WriteLine(MinCost(square));
    }
}