#include <fstream>
#include <set>

using namespace std;

long double x, y;
long long n, ans;
set<pair<int, int>> s;

ifstream fin("input.txt");
ofstream fout("output.txt");

int gcd (int a, int b) {
	return b ? gcd (b, a % b) : a;
}

int main()
{
	ios::sync_with_stdio(0);
	fin >> n;
	for (int i = 0; i < n; i++)
	{
		fin >> x >> y;
		int g = gcd(x, y);
		s.insert(make_pair(x / g, y / g));
	}
	fout << s.size();
	system("pause");
	return 0;
}