#include <bits/stdc++.h>
#define PI 3.14159265359
using namespace std;
const int64_t mod = 1e9 + 7;

int main() {
	int N;
	cin >> N;

	vector<int> X(N);
	vector<int> Y(N);
	for (int i = 0; i < N; i++) {
		cin >> X.at(i) >> Y.at(i);
	}

	int max = 2;
	for (int i = 0; i < N; i++) {

		for (int j = i+1; j < N; j++) {
			int dx, dy;
			dx = X.at(i) - X.at(j);
			dy = Y.at(i) - Y.at(j);

			int cnt = 0;

			for (int k = 0; k < N; k++) {
				int dx2, dy2;
				dx2 = X.at(i) - X.at(k);
				dy2 = Y.at(i) - Y.at(k);

				if (dy * dx2 == dy2 * dx) cnt++;
			}

			if (max < cnt) max = cnt;
		}
	}

	cout << max << endl;
}