import java.util.*;

public class Solution {

public static void main(String[] args) {

/* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */

Scanner in = new Scanner(System.in);

int n = in.nextInt();

String binary = Integer.toBinaryString(n);

int consecutive = 0;

int current = 0;

for (int i = 0; i < binary.length(); i++) {

if (Integer.parseInt(Character.toString(binary.charAt(i))) == 1) {

current++;

if (current > consecutive) {

consecutive = current;

}

} else {

current = 0;

}

}

System.out.println(consecutive);

}

}