#include <bits/stdc++.h>
#include <iomanip>
using namespace std;
#define reps(i,s,n) for(int i = s; i < n; i++)
#define rep(i,n) reps(i,0,n)
#define Rreps(i,n,e) for(int i = n - 1; i >= e; --i)
#define Rrep(i,n) Rreps(i,n,0)
#define ALL(a) a.begin(), a.end()
#define fi first
#define se second
typedef long long ll;
typedef vector<ll> vec;
typedef vector<vec> mat;

ll N,M,H,W,Q,K,A,B;
string S;
const ll MOD = 998244353;
//const ll MOD = (1e+9) + 7;
typedef pair<ll, ll> P;

int main() {
    cin>>N;
    vec x(N), y(N);
    rep(i,N) cin>>x[i]>>y[i];
    ll ans = 2;
    rep(i,N){
        rep(j,i){
            ll temp = 2;
            P v = make_pair(x[i] - x[j], y[i] - y[j]);
            rep(k,j){
                P u = make_pair(x[i] - x[k], y[i] - y[k]);
                if(v.fi * u.se == v.se * u.fi) ++temp;
            }
            ans = max(ans, temp);
        }
    }
    cout<<ans<<endl;
}