#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;


int calc(int a, int b, const vector<vector<int>>& v){
  if(v[a][0] == v[b][0]){
    int ret = 0;
    rep(i,v.size()){
      if(v[i][0] == v[a][0]) ret++;
    }
    return ret;
  }
  else if(v[a][1] == v[b][a]){
    int ret = 0;
    rep(i,v.size()){
      if(v[i][1] == v[a][1]) ret++;
    }
    return ret;
  }

  ll a_u = v[a][1] - v[b][1];
  ll a_d = v[a][0] - v[b][0];
  ll b_u = a_d * v[a][1] - a_u * v[a][0];
  ll b_d = a_d;

  int ret = 0;
  rep(i,v.size()){
    if(a_d * b_d * v[i][1] == a_u * b_d * v[i][0] + b_u * a_d) ret++;
  }
  return ret;
}

int main(){
  int N;
  cin >> N;
  vector<vector<int>> v;
  rep(i,N){
    int x, y;
    cin >> x >> y;
    v.push_back({x,y});
  }

  int ret = 2;
  rep(i,N){
    REP(j,i+1,N){
      ret = max(ret, calc(i,j,v));
    }
  }

  cout << ret << endl;
  
  return 0;
}