package com.company;

import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.Scanner;
import java.util.StringJoiner;
import java.util.concurrent.Callable;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int[] arr = Arrays.stream(scanner.nextLine().split(" ")).mapToInt(Integer::parseInt).toArray();

        int maxNumber = Arrays.stream(arr).max().getAsInt();
        int[] positions = new int[maxNumber+1];

        for (int i = 0; i < arr.length; i++) {
            int element = arr[i];
            positions[element]++;
        }

        int maxPos = 0;
        for (int i = 0; i < positions.length; i++) {
            int currentPos = i;
            if(positions[i]>positions[maxPos]){
                maxPos = currentPos;
            }
        }

        System.out.print(maxPos);
    }
}