content: 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;
  
  class Result {
  
      /*
       * Complete the 'hourglassSum' function below.
       *
       * The function is expected to return an INTEGER.
       * The function accepts 2D_INTEGER_ARRAY arr as parameter.
       */
  
      public static int hourglassSum(List<List<Integer>> arr) {
      // Write your code here
      int maxSum = Integer.MIN_VALUE;
      int rows = arr.size();
      int cols = arr.get(0).size();
      
      for(int i=0; i<rows-2; i++) {
          for(int j=0; j<cols-2; j++) {
              int sum = arr.get(i).get(j) + arr.get(i).get(j+1) + arr.get(i).get(j+2) 
                      + arr.get(i+1).get(j+1) 
                      + arr.get(i+2).get(j) + arr.get(i+2).get(j+1) + arr.get(i+2).get(j+2);
              maxSum = Math.max(maxSum, sum);
          }
      }
      return maxSum;
  
      }
  
  }
  
  public class Solution {
      public static void main(String[] args) throws IOException {
          BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
          BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));
  
          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);
              }
          });
  
          int result = Result.hourglassSum(arr);
  
          bufferedWriter.write(String.valueOf(result));
          bufferedWriter.newLine();
  
          bufferedReader.close();
          bufferedWriter.close();
      }
  }
  