#include<bits/stdc++.h>

using namespace std;
using ll = long long int;
using lc = complex<double>;

double dot(lc a, lc b) {
    return (a * conj(b)).real();
}
double cross(lc a, lc b) {
    return (a * conj(b)).imag();
}

int main(void) {
    constexpr ll MOD = 1e9 + 7;
    constexpr double PI = acos(-1);
    cout << fixed << setprecision(32);
    cin.tie(0); ios::sync_with_stdio(false);

    ll n;
    cin >> n;
    vector<lc> pt(n);
    for(auto &e: pt) {
        double x, y;
        cin >> x >> y;
        e = lc(x, y);
    }

    ll r = 0;
    for(ll i=0; i<n; i++)
    for(ll j=i+1; j<n; j++) {
        ll t = 2;
        for(ll k=j+1; k<n; k++)
            t += (abs(cross(pt[i]-pt[j], pt[k]-pt[j])) < 1e-6);
        r = max(r, t);
    }
    cout << r << endl;
}