// yuki 1041 直線大学
// 2021.8.12 bal4u

#include <stdio.h>
#include <string.h>

int X[105], Y[105];
int main()
{
	int i, j, k, N;
	int ans = 2;
	
	scanf("%d", &N);
	for (i = 0; i < N; ++i) scanf("%d%d", X+i, Y+i);
	for (i = 0; i < N; ++i) for (j = i+1; j < N; ++j) {
		int dx = X[j]-X[i], dy = Y[j]-Y[i], a = 0;
		for (k = 0; k < N; ++k) {
			if ((Y[k]-Y[i])*dx == (X[k]-X[i])*dy) ++a;
		}
		if (a > ans) ans = a;
	}
	printf("%d\n", ans);
	return 0;
}