MOD = 10 ** 9 + 7
INF = 10 ** 10
import sys
sys.setrecursionlimit(100000000)
dy = (-1,0,1,0)
dx = (0,1,0,-1)

def main():
    n = int(input())
    point = [tuple(map(int,input().split())) for _ in range(n)]
    ans = 0
    for i in range(n):
        keyx,keyy = point[i]
        for j in range(i + 1,n):
            pointx,pointy = point[j]
            tmp = 0
            for x,y in point:
                if (y - pointy)*(pointx - keyx) == (x - pointx)*(pointy - keyy):
                    tmp += 1
            ans = max(ans,tmp)
    print(ans)
if __name__ == '__main__':
    main()