Не принимает валидатор

int max = 1;
        int counter = 1;
        for (int i = 0; i < 9; i++) {

            if (integers.get(i).equals(integers.get(i +1))) {
                counter++;
                if (max < counter) {
                    max = counter;
                }
            }
            else counter = 1;
        }
        System.out.println(max);

package com.javarush.task.task08.task0812;

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

/*
Cамая длинная последовательность
*/
public class Solution {
    public static void main(String[] args) throws IOException {
        //напишите тут ваш код
        List<Integer> list = new ArrayList<>();
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        for (int i = 0; i < 10; i++) {
            list.add(Integer.parseInt(reader.readLine()));
        }

        int counter = 0;
        int nextCounter = 0;
        for (int i = 0; i < list.size() - 1; i++) {
            if (list.get(i).equals(list.get(i + 1))) {
                counter++;
            } else if (counter >= nextCounter) {
                nextCounter = counter;
                counter = 0;
            }
        }
        if (list.get(0).equals(list.get(1)) && nextCounter < counter) {
            nextCounter++;
        }
        nextCounter++;
        if ((list.get(list.size() - 2)).equals(list.get(list.size() - 1))) {
            counter++;
        }

        System.out.println(Math.max(counter, nextCounter));
        System.out.println();
        System.out.println(counter);
        System.out.println(nextCounter);
    }
}