import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        scanner.useDelimiter("\n");

        while (scanner.hasNextInt()) {
            int num = scanner.nextInt();
            int max = 0;
            int result = 0;
            while (num > 0) {
                int yu = num % 2;
                if (yu == 1) {
                    max++;
                } else {
                    result = Math.max(result, max);
                    max = 0;
                }
                num /= 2;
            }
            System.out.println(Math.max(max, result));
        }
    }
}