#include <bits/stdc++.h>
#define rep(i,n) for (int i=0; i<(int)(n); i++)
#define REP(i,m,n) for(ll i=(ll)(m);i<(ll)(n);i++)
using namespace std;
using ll = long long;
using P = pair<int, int>;

int main(){
  int n; cin >> n;
  vector<int> x(n);
  vector<int> y(n);
  rep(i,n) {
    cin >> x[i] >> y[i];
  }
  int ans = 0;
  
  rep(i,n) {
    int cnt;
    rep(j,n) {
      if (i==j) continue;
      cnt=1;
      if (x[j]==x[i]) {
        rep(k,n) {if (i!=k && j!=k && x[k]==x[i]) cnt++;}
        continue;
      }
      double a1 = abs((y[j] - y[i]) / (x[j] - x[i]));
      rep(k,n) {
        if (i==k || j==k) continue;
        if (x[k]==x[i]) {cnt++; continue;}
        double a2 = abs((y[k] - y[i]) / (x[k] - x[i]));
        if (abs(a1-a2) < 0.0001) cnt++;
      }
    }
    ans = max(cnt, ans);
  }
  cout << ans << endl;

}