#include <iostream>
#include <vector>
using namespace std;

int main(){
    int n;
    cin >> n;
    vector<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 = 0; j < n; j++){
            int coans = 2;
            if(i == j) continue;

            for(int k = 0; k < n; k++){
                if(k == i || k == j) continue;
                if(x[i] == x[j]){
                    if(x[k] == x[i]) coans++;
                }else{
                    if((x[i]-x[j])*(y[i]-y[k]) == (x[i]-x[k])*(y[i]-y[j])
                    && (x[i]*y[j]-y[i]*x[j])*(x[i]-x[k]) ==
                    (x[i]*y[k]-y[i]*x[k])*(x[i]-x[j])) coans++;
                }
            }

            if(ans < coans) ans = coans;
        }
    }
    cout << ans << endl;
    return 0;
}