#include <bits/stdc++.h>
using namespace std;

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 = 1;
    for (int i = 0; i < n; i++) {
        for (int j = i+1; j < n; j++) {
            int a = x[j] - x[i], b = y[j] - y[i], cnt = 0;
            if (a != 0 && b != 0) {
                int g = __gcd(abs(a), abs(b));
                a /= g; b /= g;
                for (int k = 0; k < n; k++) {
                    int dx = x[k] - x[i], dy = y[k] - y[i];
                    if (dx % a || dy % b) continue;
                    if (dx / a == dy / b) cnt++;
                }
            } else {
                if (!a) {
                    for (int k = 0; k < n; k++) {
                        if (y[k] == y[i]) cnt++;
                    }
                } else {
                    for (int k = 0; k < n; k++) {
                        if (x[k] == x[i]) cnt++;
                    }
                }
            }
            ans = max(ans, cnt);
        }
    }
    cout << ans << "\n";
    return 0;
}