using System;
using System.Collections.Generic;
using System.IO;
class Solution {
    static int[][] squares;
    
    static void Main(String[] args) {       
        string tempSquare = Console.ReadLine();
        for(int i = 1; i < 3; i++){
            tempSquare = tempSquare +  ' ' + Console.ReadLine();
        }
        
        int[] square = Array.ConvertAll(tempSquare.Split(' '), Int32.Parse);
        
        GenerateSquares();       
        CompareSquares(square);
        
        
    }
    static void GenerateSquares(){
        squares = new int[8][];
        for(int i = 0; i < 8; i ++){
            squares[i] = new int[9];
        }
        squares[0] = new int[] {8,1,6,3,5,7,4,9,2};
        squares[1] = new int[] {4,3,8,9,5,1,2,7,6};
        squares[2] = new int[] {2,9,4,7,5,3,6,1,8};
        squares[3] = new int[] {6,7,2,1,5,9,8,3,4};
        squares[4] = new int[] {6,1,8,7,5,3,2,9,4};
        squares[5] = new int[] {4,9,2,3,5,7,8,1,6};
        squares[6] = new int[] {8,3,4,1,5,9,6,7,2};
        squares[7] = new int[] {2,7,6,9,5,1,4,3,8};
        
    }
    static void CompareSquares(int[] square){
        int currentDiff;
        int minDiff = 1000;
        
        for(int i = 0; i < 8; i ++){
            currentDiff = 0;
            for(int number = 0; number < 9; number ++){
                currentDiff += Math.Abs(square[number] - squares[i][number]);
            }
            if (currentDiff < minDiff){
                minDiff = currentDiff;
                
            }
        }
        Console.WriteLine(minDiff);
    }
   
}