zoukankan      html  css  js  c++  java
  • Acdream 1115——找规律——Salmon And Cat

    Math is very important, for those who are also in school, make sure you will learn more about math.

    Salmon and Cat are good friends.Today Salmon ask Cat to help her judge whether a number is perfect or not. Perfect number is a kind of number defined by like this.

    First, 1 and 3 are perfect number.Then if a and b are perfect numbers, 2+ab+2a+2b is also a perfect number.For example, 1 and 1 are perfect numbers,  so 2+1+2+2 = 7 is perfect number.

    If Cat can't help Salmon,  Salmon will be sad and Cat will be much more sad. So Cat must solve the problem to maintain their friendship. Can you help Cat to solve the problem?

    Input

    This problem contains multiple test cases.

    Each test case contains one line.

    Each line contains an interger n, 1 ≤ n ≤ 109.

    Output

    For each test case, if n is a perfect number, output “Yes”, otherwise output “No”.

    Sample Input

    3
    7
    8
    

    Sample Output

    Yes
    Yes
    No
    

    Hint

    /*
       找规律..
       所有数都是3或5之积
    */
    #include<cstdio>
    #include<cstring>
    using namespace std;
    
    int main()
    {
        int n;
        while(~scanf("%d", &n)){
            n += 2;
            while(n % 3 == 0) n/= 3;
            while(n % 5 == 0) n/= 5;
            if(n == 1) printf("Yes
    ");
            else printf("No
    ");
        }
    return 0;
    }
                
    

      

  • 相关阅读:
    opengl打开本地bmp图片绘制
    jsp连接mysql数据库
    opengl雾开启
    opengl多重采样
    抗锯齿说
    opengl混合效果
    android实现视频图片取缩略图
    opengl Test
    动态规划算法(@背包问题)
    百钱买百鸡的问题(递归解法)
  • 原文地址:https://www.cnblogs.com/zero-begin/p/4649587.html
Copyright © 2011-2022 走看看