#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template <class T, class U> using Pa = pair<T, U>;
template <class T> using vec = vector<T>;
template <class T> using vvec = vector<vec<T>>;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N;
    cin >> N;
    vec<int> X(N),Y(N);
    for(int i=0;i<N;i++){
        cin >> X[i] >> Y[i];
    }
    int ans = 0;
    for(int i=0;i<N;i++) for(int j=i+1;j<N;j++){
        int dx = X[i]-X[j],dy = Y[i]-Y[j];
        int a = dy,b = -dx,c = -X[i]*dy+dx*Y[i];
        int cnt = 0;
        for(int k=0;k<N;k++) cnt += a*X[k]+b*Y[k]+c==0;
        ans = max(ans,cnt);
    }
    cout << ans << "\n";
}