Hourglass

#!/bin/python3

import math
import os
import random
import re
import sys



if __name__ == '__main__':
 arr = []

 for _ in range(6):
 arr.append(list(map(int, input().rstrip().split())))
 maximum = -9 * 7

 for i in range(6):
 for j in range(6):
 if j + 2 < 6 and i + 2 < 6:
 result = arr[i][j] + arr[i][j + 1] + arr[i][j + 2] + arr[i + 1][j + 1] + arr[i + 2][j] + arr[i + 2][j + 1] + arr[i + 2][j + 2]
 if result > maximum:
 maximum = result

 print(maximum)