#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define endl '\n'
using namespace std;
using ll=long long;
using db=double;
using pll=pair<ll,ll>;
const int inf=0x3f3f3f3f;
const int mod=998244353;
const int N=2e5+10,M=1e3+10;
int x[N],y[N];
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
    int n;
    while(cin >> n)
    {
        for(int i=0;i<n;i++)
            cin >> x[i] >> y[i];
        int t=500,ans=n%3;
        while(t--)
        {
            int u=rnd()%n+1,v=rnd()%n+1;
            if(u==v)continue;
            int cnt=0;
            for(int i=0;i<n;i++)
                if((ll)(x[i]-x[u])*(y[i]-y[v])==(ll)(x[i]-x[v])*(y[i]-y[u]))cnt++;
            ans=max(ans,cnt-(n-cnt)*2);
        }
        cout << ans << endl;
    }
    return 0;
}