# -*- coding: utf-8 -*-
import sys
sand = []
for sand_i in xrange(6):
    sand_temp = map(int,raw_input().strip().split(' '))
    sand.append(sand_temp)

 matrix = [
[1, 1, 1, 0, 0, 0],
[0, 1, 0, 0, 0, 0],
[1, 1, 1, 0, 0, 0],
[0, 0, 2, 4, 4, 0],
[0, 0, 0, 2, 0, 0],
[0, 0, 1, 2, 4, 0],
]
def get_clock(row, column):
    sub_matrix = [
        matrix[row][column:column+3],
        matrix[row+1][column:column+3],
        matrix[row+2][column:column+3],
    ]
    sub_matrix[1][0] = sub_matrix[1][2] = 0
    return sub_matrix
def get_sum(m):
    return sum(sum(r) for r in m)
max_sum = 0
for row in range(4):
    for column in range(4):
       clock = get_clock(row, column)
       s = get_sum(clock)
       if s > max_sum:
           max_sum = s
print(max_sum)