package DataStructure;

import java.io.*;

import java.util.*;

public class Java2DArray {

public static void main(String[] args) throws IOException {

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

List<List<Integer>> arr = new ArrayList<>();

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

String[] arrRowTempItems = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

List<Integer> arrRowItems = new ArrayList<>();

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

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

arrRowItems.add(arrItem);

}

arr.add(arrRowItems);

}

bufferedReader.close();

int max = Integer.MIN_VALUE, sum;

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

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

sum = arr.get(x).get(y) + arr.get(x).get(y + 1) + arr.get(x).get(y + 2)

+ arr.get(x + 1).get(y + 1)

+ arr.get(x + 2).get(y) + arr.get(x + 2).get(y + 1) + arr.get(x + 2).get(y + 2);

if (sum > max) {

max = sum;

}

}

}

System.out.println(max);

}

}