#include <iostream>
#include <vector>
using namespace std;
int main(){
  int n;cin>>n;
  vector<pair<int,int>> A(n);
  for(int i = 0; n > i; i++){
    cin>>A[i].first>>A[i].second;
  }
  int ans = 2;
  for(int i = 0; n > i; i++){
    for(int j = i+1; n > j; j++){
      int a = 2;
      for(int k = j+1; n > k; k++){
        if((A[k].first-A[i].first)*(A[j].second-A[i].second) == (A[k].second-A[i].second)*(A[j].first-A[i].first)){
          // cout << A[i].first << " " << A[i].second << endl;
          // cout << A[j].first << " " << A[j].second << endl;
          // cout << A[k].first << " " << A[k].second << endl;
          a++;
        }
      }
      ans = max(a,ans);
    }
  }
  cout << ans << endl;
}