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

int main()
{
	int N;
	cin >> N;
	vector<pair<int, int>> XY( N );
	for( int i = 0; i < N; i++ ) {
		int X, Y;
		cin >> X >> Y;
		XY[i] = make_pair( X, Y );
	}

	const double EPS = 0.000001;
	int ans = 0;
	for( int b = 0; b <= 100; b++ ) {
		for( int i = 0; i < N; i++ ) {
			double a = (double)(XY[i].second - b) / XY[i].first;
			int ans1 = 0;
			for( int j = 0; j < N; j++ ) {
				if( fabs( (double)(XY[j].second) - ( XY[j].first * a + b ) ) < EPS ) {
					ans1++;
				}
			}
			ans = max( ans, ans1 );
		}
	}

	cout << ans << endl;
}