#include<stdio.h>
int main()
{
	double x[201],y[201],a,b;
	int i,j,k,n,count,max=0;
	scanf("%d",&n);
	for(i=0;i<n;i++)
		scanf("%lf%lf",&x[i],&y[i]);
	for(i=0;i<n-1;i++)
	{
		for(k=i+1;k<n;k++)
		{
			a=y[k]-y[i];
			b=x[k]-x[i];
			for(j=k+1,count=2;j<n;j++)
				if(a*(x[j]-x[i])==b*(y[j]-y[i]))
					count++;
			if(count>max)
				max=count;
		}
	}
	printf("%d\n",max);
	return 0;
}