#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int x[9];
    int y[8]={0};
    int z[8][9]={4,9,2,3,5,7,8,1,6,
                 4,3,8,9,5,1,2,7,6,
                 6,1,8,7,5,3,2,9,4,
                 6,7,2,1,5,9,8,3,4,
                 8,1,6,3,5,7,4,9,2,
                 2,9,4,7,5,3,6,1,8,
                 8,3,4,1,5,9,6,7,2,
                 2,7,6,9,5,1,4,3,8};
    
    for(int i=0;i<9;i++)cin >> x[i];
    for(int i=0;i<8;i++)
        for(int j=0;j<9;j++)
        {
        y[i] += abs(z[i][j] - x[j]);
    }
    int min = y[0];
    for(int i=1;i<8;i++)
        {
        if(min > y[i])min = y[i];
    }
    cout << min << endl;
    return 0;
}