from collections import Counter
import math
MOD=10**9+7
N=int(input())
li=[]
zcnt=0
az,bz=0,0
for i in range(N):
    A,B=map(int,input().split())
    if A==0 and B==0:
        zcnt+=1
        continue
    if A!=0 and B==0:
        bz+=1
    elif A==0 and B!=0:
        az+=1
    g=math.gcd(A,B)
    if A<0 and B<0:
        li.append((-(A//g),-(B//g)))
    elif A<0 and B>0:
        li.append((-(A//g),-(B//g)))
    else:
        li.append((A//g,B//g))
c=Counter(li)
dic={}
ans=1
for a,b in c.keys():
    if (a,b) in dic:
        continue
    l,r=(-b,a),(b,-a)
    s=c.get(l,0)+c.get(r,0)
    dic[l],dic[r]=1,1
    res=(pow(2,c[(a,b)],MOD)+pow(2,s,MOD)-1+MOD)%MOD
    ans=(ans*res)%MOD
h=(pow(2,az,MOD)+pow(2,bz,MOD)-1+MOD)%MOD
print((ans*h%MOD-1+zcnt)%MOD)