public class Solution {
    public static void main(String[] args) throws IOException {
        ArrayList<Integer> list = reader(new ArrayList<Integer>());
        maxSequence(list);
    }
    public static ArrayList <Integer> reader (ArrayList <Integer> list) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        while (true) {
            list.add(Integer.parseInt(reader.readLine()));
            if (list.size() == 10) break;
        }
        return list;
    }

    public static void maxSequence (ArrayList <Integer> list) {
        int count = 1, temp = 1;
        for (int i = 0; i < list.size(); i++) {
            if (i + 1 == list.size()) break;
            if (list.get(i) == list.get(i + 1)) ++count;
            else if ((list.get(i) != list.get(i + 1)) && count > temp) {temp = count; count = 1;}
        }
        if (count != 1 || temp != 1)
        System.out.println((count > temp ? count : temp));
        else System.out.println(0);
    }
}