#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>



int array[9];


int main() {
    
    
    int cost=0;

    int magic1[72]={
        4,9,2,
        3,5,7,
        8,1,6,
        8,1,6,  
        3,5,7,
        4,9,2,
        2,7,6,
        9,5,1,
        4,3,8,
        4,3,8,
        9,5,1,
        2,7,6,
        6,1,8,
        7,5,3,
        2,9,4,
        2,9,4,
        7,5,3,
        6,1,8,
        8,3,4,
        1,5,9,
        6,7,2,
        6,7,2,
        1,5,9,
        8,3,4

    };
    /*int magic2[9]={

    };
    int magic3[9]={
        
    };
    int magic4[9]={
        
    };
    int magic5[9]={
        
    };
    int magic6[9]={
        
    };
    int magic7[9]={
        
    };
    int magic8[9]={
        
    };*/
    
    for(int o = 0; o<9;o++){
        scanf("%d",&array[o]);
    }
    int costArray[8];
    for(int i=0;i<8;i++){
            int index = i * 9;
            int cost = 0;
            for(int t=0;t<9;t++){
                cost = cost + ( abs(array[t]-magic1[index+t]) );
            }
            costArray[i] = cost;

    }

    int min=costArray[0];
    for(int j =0; j<8;j++){
        if(costArray[j]<min)
            min = costArray[j];
    }
    printf("%d",min);

    return 0;
}