private static int getHourGlassSum(int x, int y, int[][] arr) {

if (x + 2 >= arr[0].length) return Integer.MIN_VALUE;

if (y + 2 >= arr.length) return Integer.MIN_VALUE;

return

arr[y][x] + arr[y][x + 1] + arr[y][x + 2] +

arr[y + 1][x + 1] +

arr[y + 2][x] + arr[y + 2][x + 1] + arr[y + 2][x + 2];

}

private static int calculateMaxHourglassSum(int[][] arr) {

int max = Integer.MIN_VALUE;

for (int i = 0; i < arr.length; i++) {

for (int j = 0; j < arr[0].length; j++) {

int n = getHourGlassSum(j, i, arr);

if (n > max) max = n;

}

}

return max;

}

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

public static void main(String[] args) {

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

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;

}

}

int max = calculateMaxHourglassSum(arr);

System.out.println(max);

scanner.close();

}