def main():
  from fractions import Fraction
  from collections import defaultdict
  import sys
  input = sys.stdin.readline
  N = int(input())
  AB = [list(map(int,input().split())) for _ in range(N)]

  MOD = 10**9 + 7

  zero_zero_count = 0
  zero_one_count = 0
  one_zero_count = 0
  dd_ba = defaultdict(int, {})
  for a,b in AB:
    if (a==0)and(b==0):
      zero_zero_count += 1
    elif (a==0):
      zero_one_count += 1
    elif (b==0):
      one_zero_count += 1
    else:
      dd_ba[Fraction(-b, a)] += 1

  ans = (2**zero_one_count + 2**one_zero_count -1)
  dd_flag = defaultdict(bool, {})

  for key,value in tuple(dd_ba.items()):
    if dd_flag[key]:
      continue
    x = Fraction(key.denominator, -(key.numerator))
    y = dd_ba[x]
    ans *= (2**y + 2**value - 1) % MOD
    ans %= MOD
    dd_flag[x] = True

  ans += zero_zero_count - 1
  print(ans%MOD) 

if __name__=='__main__':
  main()