#include <bits/stdc++.h>
#include <string>
#define ft first
#define sc second
#define pt(sth) cout << sth << "\n"
#define chmax(a, b) (a)=max(a, b)
#define chmin(a, b) (a)=min(a, b)
#define moC(a, s, b) (a)=((a)s(b)+MOD)%MOD
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
static const ll INF=1e18;
static const ll MAX=101010;
static const ll MOD=1e9+7;

/*
 for(i=0; i<N; i++)
   cin >> a[i];
*/




int main(void) {
  ll i, j, k;
  
  ll N;
  cin >> N;
  ll x[111], y[111];
  
  for(i=0; i<N; i++) {
    cin >> x[i] >> y[i];
  }
  
  ll ans=0;
  for(i=0; i<N; i++) {
    for(j=i+1; j<N; j++) {
      
      ll t=2;
      for(k=j+1; k<N; k++) {
        ll a=(x[i]-x[j])*(y[k]-y[j]);
        ll b=(y[i]-y[j])*(x[k]-x[j]);
        
        t+=(a==b);
      }
      
      chmax(ans, t);
    }
  }
  
  pt(ans);
  
}