// includes
#include <bits/stdc++.h>
using namespace std;

// macros
#define pb emplace_back
#define mk make_pair
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define rrep(i, n) for(int i=((int)(n)-1);i>=0;i--)
#define irep(itr, st) for(auto itr = (st).begin(); itr != (st).end(); ++itr)
#define irrep(itr, st) for(auto itr = (st).rbegin(); itr != (st).rend(); ++itr)
#define whole(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define bit(n) (1LL<<(n))
#define F first
#define S second
// functions
template <typename T> void unique(T& c){c.erase(std::unique(c.begin(), c.end()), c.end());}
template <class T>bool chmax(T &a, const T &b){if(a < b){a = b; return 1;} return 0;}
template <class T>bool chmin(T &a, const T &b){if(a > b){a = b; return 1;} return 0;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec){for(auto &v: vec)is >> v; return is;}
template <typename T> ostream &operator<<(ostream &os, const vector<T>& vec){for(int i = 0; i < vec.size(); i++){ os << vec[i]; if(i + 1 != vec.size())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){os << "(" << p.first << ", " << p.second << ")"; return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << "(" << itr->first << ", " << itr->second << ")"; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const unordered_map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << "(" << itr->first << ", " << itr->second << ")"; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
//  types
using ll = long long int;
using P = pair<int, int>;
// constants
const int inf = 1e9;
const ll linf = 1LL << 60;
const double EPS = 1e-10;
const ll mod = 1000000007;
const int dx[4] = {-1, 0, 1, 0};
const int dy[4] = {0, -1, 0, 1};
// io
struct fast_io{
  fast_io(){ios_base::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(20);}
} fast_io_;

template<typename T>
T tgcd(T a, T b) {
  if(a > b)return tgcd(b, a);
  if(a == 0)return b;
  return tgcd(b % a, a);
}

template <typename T>
T power(T a, T n, T mod) {
  T res = 1;
  T tmp = n;
  T curr = a;
  while(tmp){
    if(tmp % 2 == 1){
      res = (T)(res * curr % mod);
    }
    curr = (T)(curr * curr % mod);
    tmp >>= 1;
  }

  return res;
}


using Int = __int128_t;

int main(int argc, char const* argv[])
{
  int n; cin >> n;
  vector<Int> a, b;
  ll zero = 0;
  rep(i, n){
    ll at, bt; cin >> at >> bt;
    if(at < 0){
      at *= -1;
      bt *= -1;
    }
    if(at == 0 && bt == 0){
      zero++;
      continue;
    }
    ll g = tgcd(abs(at), abs(bt));
    at /= g;
    bt /= g;
    if(at == 0 && bt < 0)bt *= -1;
    a.pb(at);
    b.pb(bt);
  }
  using pt = pair<Int, Int>;
  map<pt, ll> mp;
  rep(i, sz(a)){
    mp[mk(a[i], b[i])]++;
  }
  ll res = 1;
  while(sz(mp)){
    auto to = *mp.begin();
    auto p = to.F;
    pt rev = mk(p.S, - p.F);
    if(rev.F < 0){
      rev.F *= -1;
      rev.S *= -1;
    }
    if(rev.F == 0 && rev.S < 0)rev.S *= -1;
    ll tmp = 1;
    if(mp.find(rev) == mp.end()){
      tmp = power<ll>(2, to.S, mod);
    }else{
      tmp = (power<ll>(2, to.S, mod) + power<ll>(2, mp[rev], mod) + mod - 1) % mod;
      mp.erase(rev);
    }
    res = res * tmp % mod;
    mp.erase(p);
  }
  res = (res + zero) % mod;
  res = (res + mod - 1) % mod;
  cout << res << endl;
  return 0;
}


Measured memory_bytes: 28252