#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	int i, j, k;
	int x[102], y[102];
	for (i = 0; i < n; i++)
		scanf("%d %d", &x[i], &y[i]);
	int ans = 0, cnt;
	for (i = 0; i < n; i++)
	{
		for (j = i + 1; j < n; j++)
		{
			cnt = 0;
			if (x[i] == x[j])
			{
				for (k = 0; k < n; k++)
					if (x[k] == x[i])
						cnt++;
			}
			else
			{
				for (k = 0; k < n; k++)
					if ((y[j] - y[i]) * (x[k] - x[i]) == (y[k] - y[i]) * (x[j] - x[i]))
						cnt++;
			}
			if (ans < cnt)
				ans = cnt;
		}
	}
	printf("%d\n", ans);
	return 0;
}