using System;
using System.Collections.Generic;
using System.Linq;

class MostFrequentNumber
{
    static void Main()
    {
        var seqNums = Console.ReadLine().Split().Select(int.Parse).ToArray();
        int[] counts = new int[seqNums.Max() + 1];

        foreach (var num in seqNums)
        {
            counts[num]++;
        }


       var maxInCounts = new List<int>();
       int maxNuminCounters = counts.Max();

       for (int i = 0; i < counts.Length; i++)
       {
           if (counts[i] == counts.Max())
           {
               maxInCounts.Add(i);
           }
       }
       for (int i = 0; i < seqNums.Length; i++)
       {
           if (maxInCounts.Contains(seqNums[i]))
           {
               Console.WriteLine(seqNums[i]);
               break;
           }
       }
    }
}