G

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int n;
 5     while(scanf("%d",&n)!=EOF)
 6     {
 7         int ans=0;
 8         for(int i=1;i*i/2<=n;i++)
 9         {
10             if(i%2)
11             {
12                 if(n%i==0)ans++;
13             }
14             else
15             {
16                 if(n%i==(i/2))ans++;
17             }
18         }
19         printf("%d\n",ans);
20     }
21     return 0;
22 }