using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        int[] intarr = {1,1,2,2,2,3,6,5,7,8,2,3,9,9,8,8,8,9,7,7,7,1,4,7,8,9,7};

        var arr = intarr.GroupBy(c => c).Select( group => new { element = group.Key, count = group.Count() }).OrderByDescending(c => c.count);

        Console.WriteLine(arr.First().element);

    }

}