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

        int max = 0;
        int counter = 1;
        for (int i = 0; i < list.size()-1; i++) {

            if(list.get(i).equals(list.get(i+1))){

                counter++;

                if(counter  > max)
                    max = counter;
            }
            else {
                counter = 1;
            }


        }

        System.out.print(max);


    }
}