#include <iostream>
#include <vector>
#include <map>

int main() {
    int N;
    std::cin >> N;

    std::vector<int> X(N), Y(N);
    for (int i = 0; i < N; i++) std::cin >> X[i] >> Y[i];

    int ans = 0;
    for (int i = 0; i < N; i++) {
        std::map<double, int> m;

        for (int j = i + 1; j < N; j++)
            m[(double)(Y[j] - Y[i]) / (X[j] - X[i])]++;

        for (auto p : m)
            ans = std::max(ans, p.second + 1);
    }

    std::cout << ans << "\n";
}