#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	int N;
	cin >> N;
	vector<int> X(N), Y(N);
	REP(i, N) scanf("%d %d", &X[i], &Y[i]);
	int ans = 2;
	REP(i, N) FOR(j, i + 1, N) {
		int cur = 0;
		FOR(k, j + 1, N) {
			int dx1 = X[k] - X[i];
			int dy1 = Y[k] - Y[i];
			int dx2 = X[j] - X[i];
			int dy2 = Y[j] - Y[i];
			cur += dx1 * dy2 - dx2 * dy1 == 0;
		}
		chmax(ans, 2 + cur);
	}
	cout << ans << endl;
}