#include<iostream>
using namespace std;
int main()
{
	int num;
	int cnt = 0;
	cin >> num;
	num *= 2;
	int tmp = num;
	for(int i=1;i<=num;i++)
	{
		num = tmp;
		if(num%i==0)
		{
			num /=i;
			num = num + 1 - i;
			if(num>0 && num%2==0)
				cnt++;
		}
	}
	cout<<cnt<<endl;
	return 0;
}