#include <iostream>
#include <vector>
using namespace std;

int main()
{
	int n;
	cin >> n;
	vector<int> kek;
	int result = 2;
	for (int i = 2; i < (n / 2)+1; ++i)
	{
		int temp = n;
		while (temp > i)
		{
			temp -=i;
		}
		if (temp > 0)
		{
			kek.push_back(i);
		}
	}
	result +=kek.size();
	cout << result << endl;
	system("pause");
	return 0;
}