Hi, guys! Where is my mistake? Thank you in advance!
package com.codegym.task.task08.task0812;

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

/*
Longest sequence

*/

public class Solution {
    public static void main(String[] args) throws IOException {
        //write your code here
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        ArrayList<Integer> list = new ArrayList();
        for (int i = 0; i < 10; i++) {
            list.add(Integer.parseInt(reader.readLine()));
        }

       int count = 1;

       int[] arr = new int[10];
       for (int i = 0; i < 9; i++) {
            if (list.get(i).equals(list.get(i+1))) {
                arr[i] = count;
                count++;
            }
        }

        int max = arr[0];
        for (int i = 0; i < 10; i++) {
            if (arr[i] > max) max = arr[i];
        }
        System.out.println(max);
    }
}