#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int N, sm=0, mx=0;
    int a, b, c;
    cin >> N;
    vector<int> x(N), y(N);
    for (int i=0; i<N; i++) cin >> x[i] >> y[i];
    for (int i=0; i<N; i++){
        for (int j=i+1; j<N; j++){
            a = y[j]-y[i]; b = x[i]-x[j]; c = -x[i]*y[j] + y[i]*x[j];
            sm = 0;
            for (int k=0; k<N; k++){
                if (a * x[k] + b * y[k] + c == 0) sm++;
            }
            mx = max(mx, sm);
        }
    }
    cout << mx << endl;

    return 0;
}