题解 | #完全数计算#

import java.util.Scanner;

import java.util.*;

// 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 sc = new Scanner(System.in);
        while (sc.hasNext()){
            int n = sc.nextInt();
            int count = 0;
            for (int i = 1; i <= n; i++) {
                List<Integer> alist = new ArrayList<>();
                for (int j = 1; j < i; j++) {
                    if (i%j==0){
                        alist.add(j);
                    }

                }
                Collections.sort(alist);
                int res = 0;
                for (Integer temp:alist
                ) {
                    res+=temp;
                }
                if (i==res){
                    count ++;
                }
            }
            System.out.println(count);

        }
    }
}