List<List<int>> arr = new List<List<int>>();
        int max = -63; // minValue for this problem/scope
        
        for (int i = 0; i < 6; i++)
        {
            arr.Add(Console.ReadLine().TrimEnd().Split(' ').ToList().Select(arrTemp => Convert.ToInt32(arrTemp)).ToList());
        }
        
        for(int row = 0; row < 4; row++)
        {
            for(int col = 0; col < 4; col++)
            {
                int sum = 0;
                
                sum =   arr[row][col] + arr[row][col+1] + arr[row][col+2];
                sum +=  arr[row+1][col+1];
                sum +=  arr[row+2][col] + arr[row+2][col+1] + arr[row+2][col+2];
                
                if(sum > max) max = sum;
            }
        }
        
        Console.WriteLine(max);