import sys
input = sys.stdin.readline
from collections import *
from math import gcd

N = int(input())
cnt = defaultdict(int)
abzero = 0
azero = 0
bzero = 0

for _ in range(N):
    A, B = map(int, input().split())
    
    if A==0 and B==0:
        abzero += 1
    elif A==0:
        azero += 1
    elif B==0:
        bzero += 1
        
    G = gcd(abs(A), abs(B))
    A //= G
    B //= G
    
    if (A<0 and B>0) or (A<0 and B<0):
        A *= -1
        B *= -1
    
    cnt[(A, B)] += 1
