import java.io.BufferedReader;
import java.io.InputStreamReader;
 
public class Main{
    public static void main(String[] args) throws Exception{
        BufferedReader b = new BufferedReader(new InputStreamReader(System.in));
        String str = null;
        while((str=b.readLine())!=null){
            int n=Integer.parseInt(str);
            int res=0;
            int num=0;
            while(n!=0){
                if((n&1)==1)
                    num++;
                else num=0;
                n>>=1;
                //System.out.print(num);
                if(res<num)
                    res=num;
                //res=max(num,res);
            }
            
            System.out.println(res);
           
            }
    }
}