#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using vin=vector<int>;
using vll=vector<long long>;
using vvin=vector<vector<int>>;
using vvll=vector<vector<long long>>;
using vstr=vector<string>;
using vvstr=vector<vector<string>>;
using vch=vector<char>;
using vvch=vector<vector<char>>;
using vbo=vector<bool>;
using vvbo=vector<vector<bool>>;
using vpii=vector<pair<int,int>>;
using pqsin=priority_queue<int,vector<int>,greater<int>>;
#define mp make_pair
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep2(i,s,n) for(int i=(s);i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define decp(n) cout<<fixed<<setprecision((int)n)
#define _GLIBCXX_DEBUG
const int inf=1e9+7;

int main(){
    int n;cin>>n;
    vin x(n),y(n);
    rep(i,n)cin>>x[i]>>y[i];
    int m=0;
    rep(i,n-1){
        rep2(j,i+1,n){
            int sum=0;
            rep(k,n){
                if((y[i]-y[j])*x[k]-(x[i]-x[j])*y[k]+x[i]*y[j]-x[j]*y[i]==0)sum++;
            }
            m=max(m,sum);
        }
    }
    cout<<m<<endl;
}