package com.olfa.server.marketplace.exposure.supp;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;

public class TestClass {

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        Integer[] ii = new Integer[]{1, 2, 4, 2, 3, 2, 21, 21, 21, 21, 2, 1, 3, 1, 1, 1, 2, 2, 1, 23};
        List<Integer> list = Arrays.asList(ii);
//        for (int i = 0; i < 10; i++) {
//            list.add(Integer.parseInt(reader.readLine()));
//        }

        int firstElement = list.get(0);
        int streak = 1;
        int maxStreak = -1;

        for (int i = 1; i < list.size(); i++) {
            if (list.get(i) == firstElement) {
                streak++;
            } else {
                firstElement = list.get(i);

                if (maxStreak < streak) {
                    maxStreak = streak;
                }
                streak = 1;
            }
        }
        if (maxStreak < streak) {
            maxStreak = streak;
        }
        System.out.println(maxStreak);
    }
}