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

int gcd(int a,int b){
	if(a%b)return gcd(b,a%b);
	return b;
}

int main(){
	cin.tie(0),ios::sync_with_stdio(false);
	int n; cin>>n;
	unordered_map<int,int>m;
	for(int i=0;i<n;++i){
		int x,y; cin>>x>>y;
		int g=1;
		if(x!=0&&y!=0)g=gcd(x,y);
		++m[(x/g)*100+y/g];
	}
	int ans=2;
	for(auto&&i:m)ans=max(ans,i.second);
	cout<<ans<<"\n"s;
}