package com.javarush.task.task08.task0812;

import java.io.*;
import java.util.ArrayList;

/*
Cамая длинная последовательность
*/
public class Solution {
    public static void main(String[] args) throws IOException {
        ArrayList list = initialize();
        System.out.println(sequence(list));
    }

    public static ArrayList initialize() throws IOException {
        ArrayList<Integer> list = new ArrayList<>();
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        for(int i = 0; i < 10; i++)
            list.add(Integer.parseInt(br.readLine()));
        return list;
    }

    public static int sequence(ArrayList list) {
        int maxCurrent = 1, maxPrev = 1;

        for(int i = 0; i < list.size() - 1; i++) {
            for(int j = i + 1; j < list.size(); j++) {
                if(list.get(i) == list.get(j)) {
                    maxCurrent++;
                }
            }

            maxPrev = maxCurrent > maxPrev ? maxCurrent : maxPrev;
        }

        return maxPrev;
    }
}