using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        int[,]m=

        {{1,10,11,20},

        {2,9,12,19},

        {3,8,13,18},

        {4,7,14,17},

        {5,6,15,16}};

        if(issnake(m)==1)

            Console.WriteLine("super");

        else

            Console.WriteLine("ohh game isn't over");

    }

    public static int issnake(int[,]m)

    {

        for(int i=0;i<m.GetLength(1)-1;i++)

        {

            for(int j=0;j<m.GetLength(0)-1;j++)

            {

                if(i%2==0)

                {

                    if(m[j,i]>m[j+1,i])

                        return 0;

                }

                else

                {

                    if(m[j,i]<m[j+1,i])

                        return 0;

                }

            }

            if(i%2==0)

            {

                if(m[m.GetLength(0)-1,i]>m[m.GetLength(0)-1,i+1])

                    return 0;

            }

            else

            {

                if(m[0,i]>m[0,i+1])

                    return 0;

            }

        }

        return 1;

    }

}