POJ 2140

 1 #include<iostream>
 2 #include<stdio.h>
 3 using namespace std;
 4 
 5 int main()
 6 {
 7     int num;
 8     int i;
 9     int j;
10     int sum;
11     int ans;
12     cin>>num;
13     sum = 0;
14     ans = 0;
15     for(j = 1; j <= num/2; ++ j)
16     {
17         sum = 0;
18         for(i = j; i <= num/2 + 1; ++ i)
19         {
20             sum += i;
21             if(sum > num)
22                 break;
23             else if(sum == num)
24             {
25                 ++ ans;
26             }
27             
28         }
29     }
30     cout<<ans + 1<<endl;
31 }