/*
TASK:sum
LANG:C++
*/   
#include <stdio.h>
using namespace std;
long int s,n,x;
main ()
{
     scanf("%d",&n);
     int br=0;
     x=n/2+n%2;
     s=x;
     while (x>0) 
     {
      while (s<n) 
            {
             x--;
             s=s+x;
            }
      if (s==n) br++;
      s=x;
     }
printf("%d\n",br);
}
