#include<bits/stdc++.h>
#define lint long long int
#define rep(i,n) for(int i=0;i<int(n);i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define arep(i,a,n) for(int i=a;i<n;i++)
#define sort(a) sort(a.begin(),a.end())
#define reverse(a) reverse(a.begin(),a.end())
#define fill(a,x) fill(a.begin(),a.end(),x)
#define eb(data) emplace_back(data)
#define pb(data) emplace_back(data)
#define mp make_pair
#define ALNUM 26
#define vint vector<int>
#define F first
#define S second
#define ALL(data) data.begin(),data.end()
#define GEts(s) getline(cin,s);
using namespace std;
template<typename Rast>inline void out(Rast rast){cout<<rast<<"\n";return;}
template<typename Rast>inline void in(Rast& rast){cin>>rast;return;}
template<typename T>istream& operator >> (istream& is, vector<T>& vec){for(T& x: vec) is >> x;return is;}
template<typename First, typename... Rest>void in(First& first, Rest&... rest){cin >> first;in(rest...);return;}
template<typename First, typename... Rest>void out(First first, Rest... rest){cout << first<<" ";out(rest...);return;}
template<typename T>T gcd(T a,T b){if(b==0)return a;return gcd(b,a%b);}
template<typename T1,typename T2>bool chmax(T1& a,T2 b){if(a<b){a=b;return true;}else{return false;}}
template<typename T1,typename T2>bool chmin(T1& a,T2 b){if(a>b){a=b;return true;}else{return false;}}
template<typename T>T lcm(T a, T b){return a * b / gcd(a, b);}
static const double pi = 3.141592653589793;
lint modpow(lint a,lint n,lint p){if(n==1)return a%p;if(n%2==1)return (a*modpow(a,n-1,p))%p;lint t=modpow(a,n/2,p);return (t*t)%p;}//a^n%p
lint MOD=pow(10,9)+7;
//lint MOD=998244353;
lint inf=pow(2,50);
int intinf=pow(2,30);
/**/int dirx[]={1,0};int diry[]={0,1};//*///右、下
/**int dirx[]={0,1,0,-1};int diry[]={-1,0,1,0};//*///四方位
/**int dirx[]={-1,0,1,1,1,0,-1,-1};int diry[]={-1,-1,-1,0,1,1,1,0};//*///八方位

class unionfind{
public:
	vector<int> table;
	vector<int> wod;
	void init(int size){
		table.resize(size);
		wod.resize(size);
		rep(i,size)table[i]=i,wod[i]=i;
	};
	int root(int index){
		if(table[index]==index)return index;
		else{
			int hoge=root(table[index]);
			table[index]=hoge;
			return hoge;
		}
	};
	bool same(int x,int y){
		return(root(x)==root(y));
	};
	int marge(int x,int y){
		int yroot=root(y);
		int xroot=root(x);
		if(xroot==yroot)return 0;
		table[yroot]=xroot;
		return 0;
	}
};


int main(){
	cin.tie(0);ios::sync_with_stdio(false);cout<<std::fixed<<std::setprecision(12);
	int n;
	in(n);
	int x[n],y[n];
	int flg[102][102];
	memset(flg,0,sizeof(flg));
	rep(i,n){
		in(x[i],y[i]);
		flg[y[i]][x[i]]=1;
	}
	int ans=0;
	rep(i,n){
		rep(j,n){
			int hoge=0;
			//iからjに向かって線をひいてその延長線上にあるやつを数える
			if(i==j)continue;
			int dx=x[j]-x[i];
			int dy=y[j]-y[i];
			//out(i,j,dy,dx);
			if(dy==0)dx=1;
			if(dx==0)dy=1;
			if(dx!=0&&dy!=0){
				int are=gcd(abs(dy),abs(dx));
				dy/=are;
				dx/=are;
			}
			int count=0;
			while(dy*count+y[i]<=100&&dx*count+x[i]<=100&&0<=dy*count+y[i]&&0<=dx*count+x[i]){//0以上100以下
				if(flg[dy*count+y[i]][dx*count+x[i]]==1)hoge++;
				//out(i,dy*count+y[i],dx*count+x[i]);
				count++;
			}
			chmax(ans,hoge);
		}
	}
	out(ans);
	return 0;
}