#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);
	map<pair<int,int>,int>mp;
	int xzero = 0,yzero = 0;
	REP(i,N){
		cin >> x[i] >> y[i];
		int g = gcd(x[i],y[i]);
		if(g)mp[{x[i] / g,y[i] / g}]++;
		if(x[i] == 0)xzero++;
		if(y[i] == 0)yzero++;
	}
	int ma = min(2ll,N);
	for(auto e:mp)CHMAX(ma,e.second);
	out(max({ma,xzero,yzero}));
}