using System;

public class Program

{

    public static void Main()

    {

        int[,] matrix = new int[3, 3];

        int max = int.MinValue;

        for(int row = 0; row < 3; row++)

        {

            string[] input = Console.ReadLine().Split();

            for(int col = 0; col < 3; col++)

            {

                int num = int.Parse(input[col]);

                matrix[row, col] = num;

                if(num > max)

                    max = num;

            }

        }

        Console.WriteLine("Maximum element: " + max);

    }

}