// https://www.hackerrank.com/challenges/java-2d-array/problem

import java.util.Scanner;

public class Java2dArray {

public static void main(String[] args) {

int[][] matrix = getInput();

System.out.println(maxHourGlassSum(matrix));

}

private static int maxHourGlassSum(int[][] matrix) {

int sum = Integer.MIN_VALUE;

for (int row = 0 ; row < 4 ; row++) {

for (int column = 0 ; column < 4 ; column++) {

sum = Math.max(sum, hourGlassSum(row, column, matrix));

}

}

return sum;

}

private static int hourGlassSum(int row, int column, int[][] matrix) {

int sum = 0;

for (int index = 0 ; index < 3 ; sum += matrix[row][column + index++]);

for (int index = 0 ; index < 3 ; sum += matrix[row + 2][column + index++]);

return sum + matrix[row + 1][column + 1];

}

private static int[][] getInput() {

Scanner scanner = new Scanner(System.in);

int[][] matrix = new int[6][6];

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

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

matrix[row][column] = scanner.nextInt();

}

}

scanner.close();

return matrix;

}

}