private static final Scanner scanner = new Scanner(System.in);

public static void main(String[] args) {

int[][] arr = new int[6][6];

int max = -70;

for (int i = 0; i < 6; i++) {

String[] arrRowItems = scanner.nextLine().split(" ");

scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

for (int j = 0; j < 6; j++) {

int arrItem = Integer.parseInt(arrRowItems[j]);

arr[i][j] = arrItem;

}

}

for(int i=0;i<4;i++)

{

for(int j=0;j<4;j++)

{

int sum = arr[i][j] + arr[i][j+1] + arr[i][j+2] + arr[i+1][j+1] + arr[i+2][j] + arr[i+2][j+1] + arr[i+2][j+2];

if(sum >= max)

max = sum;

}

}

System.out.println(max);

scanner.close();

}