#include <fstream.h>
#include <math.h>
#include <iostream.h>


void main()
{
	ifstream input("input.txt");
	ofstream output("output.txt");
    unsigned long  m;
	input>>m;
	for(unsigned long h=1,s=0;h<sqrt(2*m);h++)   
          if(((2*m-h*h)%h==0) && ((2*m-h*h)/h%2==1))    s++;
	
	output<<s;	
}