typedef long long ll;
typedef long double ld;
#include <bits/stdc++.h>
using namespace std;
const ld EPS = 0.000000001;

int main() {
    ld n;
    std::cin >> n;
    vector<ld> x(n),y(n);
    for (int i = 0; i < n; i++) {
        std::cin >> x[i]>>y[i];
    }
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        for (int j = i+1; j < n; j++) {
            ll cnt = 0;
            if(x[i]==x[j]){
                for (int k = 0; k < n; k++) {
                    if(x[k]==x[i]){
                        cnt++;
                    }
                }
            }else{
                ld a = (y[i]-y[j])/(x[i]-x[j]);
                ld b = y[i]-a*x[i];
                for (int k = 0; k < n; k++) {
                    // std::cout << y[k]-a*x[k]-b << std::endl;
                    if(abs(y[k]-a*x[k]-b)<EPS){
                        cnt++;
                    }
                }
            }
            ans = max(cnt,ans);
        }
    }
    std::cout << ans << std::endl;
}