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 in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int a = in.nextInt();
            int max = 0;
            int count = 0;
            while(a != 0){
                int n = a % 2;
                if(n == 1){
                    count++;
                    if(count > max) max = count;
                }else{
                    count = 0;
                }
                a = a/2;
            }
            System.out.print(max);
        }
    }
}