记录编号	204653	评测结果	AAAAAAAAAA
题目名称	[SYOI 2015] Asm.Def找燃料	最终得分	100
用户昵称	dydxh	是否通过	通过
代码语言	C++	运行时间	0.021 s
提交时间	2015-11-04 15:34:50	内存使用	0.28 MiB

/*
Problem:cogs2090;
Language:c++;
by dydxh;
2015.11.04;
*/
#include<iostream>
#include<cstdio>
#include<set>
#include<map>
#include<queue>
#include<algorithm>
#include<cstring>
#include<cmath>
#include<utility>
#include<ctime>
#include<cstdlib>
#include<bitset>
#include<string>
#define ll long long
#define ull unsigned long long
using namespace std;
const int oo=2000000000;
const int maxn=105;
const int mod=1000000007;
int n,cnt,ans;
struct Pointer{
	int x,y,rp;
}p[maxn];
inline int read(){
	int x=0;bool flag=0;char ch=getchar();
	while(ch>'9' || ch<'0') {if(ch=='-') flag=1;ch=getchar();}
	while(ch>='0' && ch<='9') {x=x*10+ch-'0';ch=getchar();}
	return flag?-x:x;
}
inline Pointer operator - (Pointer a,Pointer b){
	a.x-=b.x,a.y-=b.y;
	return a;
}
inline int operator * (Pointer a,Pointer b){
	return a.x*b.y-a.y*b.x;
}
bool mycmp(Pointer a,Pointer b){
	return ((a.x<b.x) || (a.x==b.x && a.y<b.y));
}
int main()
{
	//freopen("cc.in","r",stdin);
	freopen("asm_fuel.in","r",stdin);
	freopen("asm_fuel.out","w",stdout);
	n=read();
	for(int i=1;i<=n;i++){
		p[i].x=read(),p[i].y=read();
		p[i].rp=1;
	}
	sort(p+1,p+1+n,mycmp);
	p[0].x=-oo;
	for(int i=1;i<=n;i++){
		if(p[i].x==p[i-1].x && p[i].y==p[i-1].y)
			p[cnt].rp++;
		else p[++cnt]=p[i];
	}
	if(cnt==1){
		printf("%d\n",p[1].rp);
		return 0;
	}
	for(int i=1;i<=cnt;i++)
		for(int j=1;j<=cnt;j++){
			if(i==j) continue;
			int Digit=p[i].rp+p[j].rp;
			for(int k=1;k<=cnt;k++){
				if(k==i || k==j) continue;
				if((p[i]-p[j])*(p[k]-p[i])==0)
					Digit+=p[k].rp;
			}
			if(ans<Digit)
				ans=Digit;
		}
	printf("%d\n",ans);
	return 0;
}