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 maxSum = Integer.MIN_VALUE;

    for (int i = 0; i < 4; i++) {
        for (int j = 0; j < 4; 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);
        }
    }

    System.out.println(maxSum);
}

}