arr = []
for _ in range(6):
    arr.append(list(map(int, input().rstrip().split())))
    
maxSum = -100
for i in range(4):
    for j in range(4):
        theSum = 0
        theSum += (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 theSum > maxSum:
            maxSum = theSum

print(maxSum)