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    python 3

    !/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())))
    results=[]
    for i in range(0,4):
        for j in range(0,4):
            r=(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])     
            results.append(r)       
    print(max(results))