#include <iostream>
#include <iomanip>
#include <string>
#include <stack>
#include <vector>
#include <complex>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <iterator>
#include <map>
#include <set>
#include <queue>
#include <list>
#include <regex>
#include <limits>
#include <time.h>
#include <cstdint>
using namespace std;
using pii  = pair<int,int>;
using ll=long long;
using ld=long double;
#define pb push_back
#define mp make_pair
#define sc second
#define fr first
#define stpr setprecision
#define cYES cout<<"YES"<<endl
#define cNO cout<<"NO"<<endl
#define cYes cout<<"Yes"<<endl
#define cNo cout<<"No"<<endl
#define rep(i,n) for(ll i=0;i<(n);++i)
#define Rep(i,a,b) for(ll i=(a);i<(b);++i)
#define rrep(i,n) for(ll i=n-1;i>=0;i--)
#define rRep(i,a,b) for(ll i=b-1;i>=a;i--)
#define crep(i) for(char i='a';i<='z';++i)
#define psortsecond(A,N) sort(A,A+N,[](const pii &a, const pii &b){return a.second<b.second;});
#define ALL(x) (x).begin(),(x).end()
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define endl '\n'
int ctoi(const char c){
  if('0' <= c && c <= '9') return (c-'0');
  return -1;
}
ll gcd(ll a,ll b){return (b == 0 ? a : gcd(b, a%b));}
ll lcm(ll a,ll b){return a*b/gcd(a,b);}
constexpr ll MOD=1000000007;
constexpr ll INF=1000000011;
constexpr ll MOD2=998244353;
constexpr ll LINF = 1001002003004005006ll;
constexpr ld EPS=10e-8;
template <class T, class U> inline bool chmax(T& lhs, const U& rhs) { if (lhs < rhs) { lhs = rhs; return 1; } return 0; }
template <class T, class U> inline bool chmin(T& lhs, const U& rhs) { if (lhs > rhs) { lhs = rhs; return 1; } return 0; }
template<typename T> istream& operator>>(istream& is,vector<T>& v){for(auto&& x:v)is >> x;return is;}
template<typename T,typename U> istream& operator>>(istream& is, pair<T,U>& p){ is >> p.first; is >> p.second; return is;}
template<typename T,typename U> ostream& operator>>(ostream& os, const pair<T,U>& p){ os << p.first << ' ' << p.second; return os;}
template<class T> ostream& operator<<(ostream& os, vector<T>& v){
  for(auto i=begin(v); i != end(v); ++i){
    if(i !=begin(v)) os << ' ';
    os << *i;
  }
  return os;
}

ll N;
ll A,B;
map<pair<ll,ll>,ll> M,C;

ll cme;

ll modpow(ll b, ll e, ll m){  // bのe乗のmod m を返す
  if (e == 0) return 1;
  cme = modpow(b, e / 2, m);
  cme = (cme * cme) % m;
  if (e % 2 == 1) cme = (cme * b) % m;
  return cme;
}

ll R,L,Q;

int main(){
  cin >> N;
  rep(i,N){
    ll A,B;
    cin >> A >> B;
    if(A==0 && B==0){
      Q++;
      continue;
    }
    else if(A==0){
      L++;
      continue;
    }
    else if(B==0){
      R++;
      continue;
    }
    // 約分して分子を正にする
    ll K=gcd(abs(A),abs(B));
    if(A<0){
      A*=-1;B*=-1;
    }
    A/=K;B/=K;
    M[mp(A,B)]++;
  }
  ll ANS=1;
  for(auto P : M){
    if(C[P.fr]==1){
      continue;
    }
    ll S=P.fr.fr;ll T=P.fr.sc;
    if(T<0){
      S*=-1;T*=-1;
    }
    S*=-1;
    ll X=(modpow(2,M[P.fr],MOD)+modpow(2,M[mp(T,S)],MOD)-1+MOD)%MOD;
    ANS=(ANS*X)%MOD;
    C[P.fr]=1;C[mp(T,S)]=1;
  }
  ll X=(modpow(2,R,MOD)+modpow(2,L,MOD)-1+MOD)%MOD;
  ANS*=X;
  ANS%=MOD;
  ANS=(ANS+Q-1+MOD)%MOD;
  cout <<  ANS  << endl;
}


Measured memory_bytes: 53604