include

using namespace std;

int main(){ int arr[6][6]; for(int i=0;i<6;i++){ for(int b=0;b<6;b++){ cin>>arr[i][b]; } }
int a=1;
int c; for(int e=0;e<4;e++){ for(int f=0;f<4;f++){ int b=b+arr[e][f]+arr[e+2][f]+arr[e+1][f+1]+arr[e][f+1]+arr[e+2][f+1]+arr[e][f+2]+arr[e+2][f+2]; while(a==1){c=b;a++;}

        c=max(c,b);
    }
}

cout<

return 0;}