#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
#include<iostream>
#include<algorithm>
#include<stack>
#include<queue>
#include<vector>
#include<set>
#include<map>
#include<string>
#define nl n<<1
#define nr (n<<1)|1
using namespace std;
typedef long long ll;
typedef pair<int,int>P;
const int INF=0x3f3f3f3f;
const ll INFF=0x3f3f3f3f3f3f3f3f;
const double pi=acos(-1.0);
const double eps=1e-9;
const ll mod=1e9+7;
set<long double>s;
int main()
{
ios::sync_with_stdio(false);
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
long double k,b;
cin>>k>>b;
if(k)s.insert(b/k);
}
cout<<s.size()<<endl;
return 0;
}