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); int num = scanner.nextInt(); String s = Integer.toBinaryString(num); int count = 0; for (int i = 0; i < s.length(); i++) { if(s.ch...