import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            int b = scanner.nextInt();
            int continueCount = 0;
            int max = 0;
            while (b > 0) {
                if ((b & 1) == 1) {
                    max = Math.max(++continueCount, max);
                } else {
                    continueCount = 0;
                }
                b >>= 1;
            }
            System.out.println(max);
        }
    }
}