text: # Link --> https://www.hackerrank.com/challenges/2d-array/problem
  
  # Code:
  import sys
  
  d = sys.stdin.read().splitlines()
  d = [list(map(int,i.split())) for i in d]
  
  maxval = None
  for j in range(4):
      for i in range(4):
          add = d[j][i] + d[j][i+1] + d[j][i+2] + d[j+1][i+1] + d[j+2][i] + d[j+2][i+1] + d[j+2][i+2]
          if maxval == None:
              maxval = add
          elif add > maxval:
              maxval = add
              
  print(maxval)
  