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

int main() {
    int n;
    cin >> n;
    assert(2 <= n && n <= 100);
    vector<int> x(n), y(n);
    set<pair<int, int>> check;
    for (int i = 0; i < n; i++) {
        cin >> x.at(i) >> y.at(i);
        assert(0 <= x.at(i) && x.at(i) <= 100);
        assert(0 <= y.at(i) && y.at(i) <= 100);
        assert(check.find(make_pair(x.at(i), y.at(i))) == check.end());
        check.emplace(x.at(i), y.at(i));
    }
    int ans = 0;
    for (int i = -100; i <= 100; i++) {
        for (int j = 0; j <= 100; j++) {
            if (i - j == 0) continue;
            map<int, int> m;
            for (int k = 0; k < n; k++) {
                m[i * x.at(k) + j * y.at(k)]++;
            }
            for (auto s : m) {
                ans = max(ans, s.second);
            }
        }
    }
    cout << ans << endl;
}