#include "bits/stdc++.h"
using namespace std;
#define int long long
#define REP(i, n) for (int i = 0; i < (int)n; ++i)
#define RREP(i, n) for (int i = (int)n - 1; i >= 0; --i)
#define FOR(i, s, n) for (int i = s; i < (int)n; ++i)
#define RFOR(i, s, n) for (int i = (int)n - 1; i >= s; --i)
#define ALL(a) a.begin(), a.end()
#define IN(a, x, b) (a <= x && x < b)
template<class T>inline void out(T t){cout << t << "\n";}
template<class T,class... Ts>inline void out(T t,Ts... ts){cout << t << " ";out(ts...);}
template<class T>inline bool CHMIN(T&a,T b){if(a > b){a = b;return true;}return false;}
template<class T>inline bool CHMAX(T&a,T b){if(a < b){a = b;return true;}return false;}
constexpr int INF = 2e18;


signed main(){
	int N;
	cin >> N;
	vector<int>x(N),y(N);
	REP(i,N)cin >> x[i] >> y[i];
	int ans = 0;
	REP(i,N){
		FOR(j,i + 1,N){
			int sum = 2;
			REP(k,N){
				if(k == i || k == j)continue;
				int x1 = x[i] - x[k];
				int y1 = y[i] - y[k];
				int x2 = x[i] - x[j];
				int y2 = y[i] - y[j];
				if(x1 * y2 == x2 * y1)++sum;
			}
			CHMAX(ans,sum);
		}
	}
	out(ans);
}