#include <bits/stdc++.h>

using namespace std;

using ll = long long;

constexpr char newl = '\n';

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    vector<int> x(n), y(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 = 0; j < i; j++) {
            int cnt = 0;
            for (int k = 0; k < n; k++) {
                cnt += ((y[k] - y[i]) * (x[i] - x[j]) == (y[i] - y[j]) * (x[k] - x[i]));
            }
            ans = max(ans, cnt);
        }
    }
    cout << ans << newl;
    return 0;
}