#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

int N, X[101], Y[101];

int main() {
  cin >> N;
  for (int i = 0; i < N; i++) cin >> X[i] >> Y[i];
  int ans = 0, cnt = 0;
  for (int a = 0; a < N; a++) {
    for (int b = a + 1; b < N; b++) {
      int dx = X[a] - X[b];
      int dy = Y[a] - Y[b];
      cnt = 0;
      for (int i = 0; i < N; i++) {
        int dx2 = X[a] - X[i];
        int dy2 = Y[a] - Y[i];

        if (dx * dy2 == dx2 * dy) cnt++;
      }
      ans = max(ans, cnt);
    }
  }
  cout << ans << endl;
  return 0;
}