#include <iostream>
#include <cstdio>
#include <cmath>
#include <ctime>
#include <cstdlib>
#include <cassert>
#include <vector>
#include <list>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <bitset>
#include <string>
#include <algorithm>
#include <utility>
#define llint long long
#define inf 1e18
#define rep(x, s, t) for(llint (x) = (s); (x) < (t); (x)++)
#define Rep(x, s, t) for(llint (x) = (s); (x) <= (t); (x)++)
#define chmin(x, y) (x) = min((x), (y))
#define chmax(x, y) (x) = max((x), (y))

using namespace std;
typedef pair<llint, llint> P;

llint n;
llint x[105], y[105];

int main(void)
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> x[i] >> y[i];
	
	llint ans = 0;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			if(i >= j) continue;
			llint tmp = 0;
			for(int k = 1; k <= n; k++){
				llint dx = (x[k]-x[i]), dy = (y[k]-y[i]), dx2 = (x[j]-x[i]), dy2 = (y[j]-y[i]);
				if(dx*dy2-dy*dx2 == 0) tmp++;
			}
			ans = max(ans, tmp);
		}
	}
	cout << ans << endl;
	
	return 0;
}