import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;



public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

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

        IntStream.range(0, 6).forEach(i -> {
            try {
                arr.add(
                    Stream.of(bufferedReader.readLine().replaceAll("\\s+$", "").split(" "))
                        .map(Integer::parseInt)
                        .collect(toList())
                );
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        });

        bufferedReader.close();
        
        int largestHourglassValue = Integer.MIN_VALUE;
        
        for (int i=0; i < 4; i++) {
            for (int j=0; j < 4; j++) {
                int sum = arr.get(i).subList(j, j+3)
                    .stream().mapToInt(Integer::intValue).sum();
                sum += arr.get(i+1).get(j+1);
                sum += arr.get(i+2).subList(j, j+3)
                    .stream().mapToInt(Integer::intValue).sum();

                if (sum > largestHourglassValue) {
                    largestHourglassValue = sum;
                }
            }            
        }
        
        System.out.print(largestHourglassValue);
    }
}