#include <vector>
#include <fstream>
#include <iostream>
#include <cmath>
#include <map>
#include <algorithm>
#define ull unsigned long long int
#define error 0.000001
#include <bits/stdc++.h>
using namespace std;

int n;

vector<pair<double,double> > cadran1;
vector<pair <double, double> >cadran2;
int cnt1,cnt2;
class InputReader {
    public:
        InputReader() {}
        InputReader(const char *file_name) {
            input_file = fopen(file_name, "r");
            cursor = 0;
            fread(buffer, SIZE, 1, input_file);
        }
        inline InputReader &operator >>(int &n) {
            while((buffer[cursor] < '0' || buffer[cursor] > '9')&& buffer[cursor]!='-') {
                advance();
            }
            semn=1;
            if(buffer[cursor]=='-')
            {
                semn=-1;
                advance();
            }
            n = 0;
            while('0' <= buffer[cursor] && buffer[cursor] <= '9') {
                n = n * 10 + buffer[cursor] - '0';
                advance();
            }
            n*=semn;
            return *this;
        }
    private:
        FILE *input_file;
        static const int SIZE = 1 << 20;
        int cursor,semn;
        char buffer[SIZE];
        inline void advance() {
            ++ cursor;
            if(cursor == SIZE) {
                cursor = 0;
                fread(buffer, SIZE, 1, input_file);
            }
        }
};
int solve(vector<pair< double,double> > cadran)
{
    sort(cadran.begin(),cadran.end());
    int cnt=0,sol=0,start=0;
    for(int i=1;i<cadran.size();i++)
    {
       if(cadran[i].first>cadran[start].second)
       {
           cnt++;
           start=i;
       }
       else
       {
           if(cadran[i].second<cadran[start].second)
            start=i;
       }
    }
    cnt++;
    return cnt;
}
int main()
{
InputReader    f("rays.in");
ofstream g("rays.out");
    for(int i=1; i<=n; i++)
    {
        int x,y,y1;
        f>>x>>y>>y1;
        if(x<0)
        {
            double  unghi1=double (1.0*y/-x);
            double unghi2=double(1.0*y1/-x);
            if(unghi1>unghi2) swap(unghi1,unghi2);

            cadran2.push_back (make_pair(unghi1,unghi2));

        }
        else
        {
            double  unghi1=double (1.0*y/x);
            double unghi2=double(1.0*y1/x);
            if(unghi1>unghi2) swap(unghi1,unghi2);
            cadran1.push_back (make_pair (unghi1,unghi2));

        }

    }
    g<<solve(cadran1)+solve(cadran2);
}