#include<cstdio>
using namespace std;
int n,Ans;
int x[105],y[105];
double A,B,C;
int main()
{
	freopen("asm_fuel.in","r",stdin);
	freopen("asm_fuel.out","w",stdout);
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
	{
		scanf("%d%d",&x[i],&y[i]);
	}
	for(int i=1;i<=n;i++)
	{
		for(int j=i+1;j<=n;j++)
		{
			int cnt=0;
			if(x[i]==x[j]&&y[i]==y[j])
			{
				continue;
			}
			if(y[i]==y[j])
			{
				A=0,B=1,C=-y[i];
			}
			else
			{
				A=1,B=double(x[i]-x[j])/(y[j]-y[i]);
				C=-x[j]-y[j]*B;
			}
			for(int k=1;k<=n;k++)
			{
				if(A*x[k]+B*y[k]+C==0)
				{
					cnt++;
				}
			}
			if(cnt>Ans)
			{
				Ans=cnt;
			}
		}
	}
	printf("%d\n",Ans);
}