//#include <bits/stdc++.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <cmath>
#include <algorithm>
#include <map>
#include <iomanip>
#include <stdlib.h>
#include <stdio.h>
#include <queue>
#include <deque>
#include <set>
#include <stack>
#include <time.h>
 
using namespace std;
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> Pii;
typedef pair<int, ll> Pil;
typedef pair<ll, ll> Pll;
typedef pair<ll, int> Pli;

#define fi first
#define se second
#define mp make_pair
 
const ll MOD = 1e9 + 7;
const ll MOD2 = 998244353;
const ll INF = 1ll << 60;
const double PI = 2 * asin(1);

void yes() {printf("yes\n");}
void no() {printf("no\n");}
void Yes() {printf("Yes\n");}
void No() {printf("No\n");}
void YES() {printf("YES\n");}
void NO() {printf("NO\n");}

int N, X[105], Y[105];

int main(){
  cin >> N;
  for (int i = 0; i < N; i++){
    cin >> X[i] >> Y[i];
  }

  int ans = 0;
  for (int i = 0; i < N; i++){
    for (int j = i + 1; j < N; j++){
      int now = 0;
      for (int k = 0; k < N; k++){
        int Sum1 = (X[k] - X[i]) * (Y[j] - Y[i]);
        int Sum2 = (X[j] - X[i]) * (Y[k] - Y[i]);
        if (Sum1 == Sum2) now++;
      }
      ans = max(ans, now);
    }
  }
  cout << ans << endl;


  return 0;
}