#include <algorithm>
#include <array>
#include <cmath>
#include <cstdio>
#include <deque>
#include <iomanip>
#include <iostream>
#include <numeric>
#include <optional>
#include <queue>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <vector>

using namespace std;

int main() {
    int32_t n;
    cin >> n;
    vector<pair<int32_t, int32_t>> xys(n);
    for (auto &&xy : xys) {
        cin >> xy.first >> xy.second;
    }
    int32_t ans = 0;
    for (auto i = 0; i < n; ++i) {
        auto x1 = xys[i].first, y1 = xys[i].second;
        for (auto j = 0; j < n; ++j) {
            if (i == j)
                continue;
            auto x2 = xys[j].first, y2 = xys[j].second;
            int32_t c = 2;
            for (auto k = 0; k < n; ++k) {
                if (k == i || k == j)
                    continue;
                auto x3 = xys[k].first, y3 = xys[k].second;
                if ((y3 - y1) * (x1 - x2) == (x3 - x1) * (y1 - y2))
                    ++c;
            }
            ans = max(ans, c);
        }
    }
    cout << ans << endl;
    return 0;
}