• A problem is easy


    描述When Teddy was a child , he was always thinking about some simple math problems ,such as “What it’s 1 cup of water plus 1 pile of dough ..” , “100 yuan buy 100 pig” .etc..


    One day Teddy met a old man in his dream , in that dream the man whose name was“RuLai” gave Teddy a problem :

    Given an N , can you calculate how many ways to write N as i * j + i + j (0 < i <= j) ?

    Teddy found the answer when N was less than 10…but if N get bigger , he found it was too difficult for him to solve.
    Well , you clever ACMers ,could you help little Teddy to solve this problem and let him have a good dream ?

     
    输入
    The first line contain a T(T <= 2000) . followed by T lines ,each line contain an integer N (0<=N <= 10^11).
    输出
    For each case, output the number of ways in one line
    样例输入
    2
    1
    3
    样例输出
    0
    1

     1 import java.util.Scanner;
     2 
     3 public class Main {
     4     public static void main(String[] args) {
     5         Scanner scanner=new Scanner(System.in);
     6         int T;
     7         int number;
     8         int i;
     9         int count;
    10         
    11         T=scanner.nextInt();
    12         while(true){
    13             if(T==0)
    14                 break;
    15             T--;
    16             
    17             number=scanner.nextInt();
    18             
    19             count=0;
    20             number++;
    21             for(i=2;i*i<=number;i++){
    22                 if(number%i==0)
    23                     count++;
    24             }
    25             System.out.println(count);
    26         }
    27     } 
    28 }
     
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  • 原文地址:https://www.cnblogs.com/zqxLonely/p/4132318.html
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