#include <bits/stdc++.h>
using namespace std;

#define int long long
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

signed main(){
	int n;
	cin >> n;

	int x[110], y[110];
	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++){
			if(i == j) continue;
			int cnt = 2;
			int a = x[i] - x[j];
			int b = y[i] - y[j];
			for(int k = 0;k < n;k++){
				if(k == i || k == j) continue;
				int c = x[i] - x[k];
				int d = y[i] - y[k];
				if(a == 0){
					if(c == 0) cnt++;
				}
				else if(b == 0){
					if(d == 0) cnt++;
				}
				else{
					if(a*d == c*b){
						cnt++;
					}
				}
			}
			chmax(ans, cnt);
		}
	}

	cout << ans << endl;


	return 0;
}