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

int main() {
    int arr[3][3];
    int ourarr1[3][3]={2,7,6,9,5,1,4,3,8};
    int ourarr2[3][3]={4,9,2,3,5,7,8,1,6};
    int ourarr3[3][3]={8,3,4,1,5,9,6,7,2};
    int ourarr4[3][3]={6,1,8,7,5,3,2,9,4};
    int ourarr5[3][3]={6,7,2,1,5,9,8,3,4};
    int ourarr6[3][3]={8,1,6,3,5,7,4,9,2};
    int ourarr7[3][3]={4,3,8,9,5,1,2,7,6};
    int ourarr8[3][3]={2,9,4,7,5,3,6,1,8};
    unsigned int cost=0, newcost=0;
    for(int row=0;row<3;row++){
        for(int col=0;col<3;col++){
            scanf("%d",&arr[row][col]);
        }
    }
    for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr1[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr1[a1][b1]);
            else
                newcost=newcost+(ourarr1[a1][b1]-arr[a1][b1]);
        }
    }
    cost=newcost;
    newcost=0;
     for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr2[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr2[a1][b1]);
            else
                newcost=newcost+(ourarr2[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
    for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr3[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr3[a1][b1]);
            else
                newcost=newcost+(ourarr3[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
    for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr4[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr4[a1][b1]);
            else
                newcost=newcost+(ourarr4[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
    for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr5[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr5[a1][b1]);
            else
                newcost=newcost+(ourarr5[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
    for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr6[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr6[a1][b1]);
            else
                newcost=newcost+(ourarr6[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
    for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr7[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr7[a1][b1]);
            else
                newcost=newcost+(ourarr7[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
   for(int a1=0;a1<3;a1++){
        for(int b1=0;b1<3;b1++){
            if(arr[a1][b1]>=ourarr8[a1][b1])
                newcost=newcost+(arr[a1][b1]-ourarr8[a1][b1]);
            else
                newcost=newcost+(ourarr8[a1][b1]-arr[a1][b1]);
        }
    }
    if(cost>newcost)
        cost=newcost;
    else
        cost=cost;
    newcost=0;
    printf("%d",cost);
   
}