public class Solution {

public static void main(String[] args) throws IOException {
         int sum;
    int maxsum = Integer.MIN_VALUE;
    int [][] a = new int[6][6];
    Scanner sc = new Scanner(System.in);
    for(int i=0; i<6; i++){
        for(int j=0; j<6; j++){
            a[i][j]=sc.nextInt();
        }
    }
        for (int i = 0; i < 6; i++) {
            for (int j = 0; j < 6; j++) {
                if(i > 1 && j > 1) {
                    sum = a[i][j]
                            + a[i][j - 1]
                            + a[i][j - 2]
                            + a[i - 1][j - 1]
                            + a[i - 2][j]
                            + a[i - 2][j - 1]
                            + a[i - 2][j - 2];
                    if (sum > maxsum) {
                        maxsum = sum;
                    }
                }
            }
        }

//
System.out.println(maxsum); } }