#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <stack>
#include <queue>
#include <cmath>
#include <tuple>
#include <cstdio>
#include <bitset>
#include <sstream>
#include <iterator>
#include <numeric>
#include <map>
#include <cstring>
#include <set>
#include <functional>
#include <iomanip>

using namespace std;

//#define DEBUG_ //!!提出時にコメントアウト!!
#ifdef DEBUG_
	#define dump(x)  cerr << #x << " = " << (x) << endl;
#else
	#define dump(x)  ;
#endif

#define equals(a,b) (fabs((a)-(b)) < EPS)
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define SZ(x) ((int)(x).size())
#define pb push_back
#define eb emplace_back

//#define int long long

typedef long long LL;
typedef vector<int> VI;
typedef vector<LL> VL;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<LL, LL> PLL;

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 (b<a) { a=b; return 1; } return 0; }

template <typename T>
std::string printVector(const std::vector<T> &data)
{
    std::stringstream ss;
    std::ostream_iterator<T> out_it(ss, ", ");
    ss << "[";
    std::copy(data.begin(), data.end() - 1, out_it);
    ss << data.back() << "]";
    return ss.str();
}

template <typename T>
void print_array(const T &ary, int size){
    REP(i,size){
        cout << ary[i] << " ";
    }
    cout << endl;
}

const int mod = 1e9+7;
const LL LINF = 1001002003004005006ll;
const int INF = 1001001001;
const double EPS = (1e-10);

long long int gcd(long long int a, long long int b) {
    if (a < b)swap(a, b);
    while (b) {
        a %= b;
        swap(a, b);
    }
    return a;
}

struct mint {
    LL x; // typedef long long LL;
    mint(LL x=0):x( x >= 0 ? x%mod : x%mod+mod){}
    mint& operator+=(const mint a) {
        if ((x += a.x) >= mod) x -= mod;
        return *this;
    }
    mint& operator-=(const mint a) {
        if ((x += mod-a.x) >= mod) x -= mod;
        return *this;
    }
    mint& operator*=(const mint a) {
        (x *= a.x) %= mod;
        return *this;
    }
    mint operator+(const mint a) const {
        mint res(*this);
        return res+=a;
    }
    mint operator-(const mint a) const {
        mint res(*this);
        return res-=a;
    }
    mint operator*(const mint a) const {
        mint res(*this);
        return res*=a;
    }
    mint pow(LL t) const {
        if (!t) return 1;
        mint a = pow(t>>1);
        a *= a;
        if (t&1) a *= *this;
        return a;
    }

    // for prime mod
    mint inv() const {
        return pow(mod-2);
    }
    mint& operator/=(const mint a) {
        return (*this) *= a.inv();
    }
    mint operator/(const mint a) const {
        mint res(*this);
        return res/=a;
    }
};

signed main(int argc, char const *argv[])
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << setprecision(12);

    int N; cin >> N;
    map<pair<LL,LL>,LL> mp; 
    LL z1 = 0, z2 = 0, z3 = 0;
    REP(i,N){
        LL A,B; cin >> A >> B;
        if(A == 0 and B == 0) z3++;
        else if(A == 0) z1++;
        else if(B == 0) z2++;
        else{
            if((A > 0 and B < 0) or (A < 0 and B > 0)){
                A = abs(A);
                B = abs(B);
                LL g = gcd(A,B);
                A /= g; B /= g;
                mp[PLL(-A,B)]++;

            }else{
                A = abs(A);
                B = abs(B);
                LL g = gcd(A,B);
                A /= g; B /= g;
                mp[PLL(A,B)]++;
            }
        }
    }
    mint ans = 1;

    mint two = 2;
    set<PLL> s;
    for(auto p : mp){
        if(s.find(p.first) != s.end()) continue;

        LL A,B,cnt;
        tie(A,B) = p.first;
        cnt = p.second;

        LL ocnt = mp[PLL(B,-A)];

        ans *= two.pow(cnt) + two.pow(ocnt) - 1;

        s.insert(PLL(B,-A));
    }

    ans *= two.pow(z1) + two.pow(z2) - 1;
    ans += z3 - 1;

    cout << ans.x << endl;

}

Measured memory_bytes: 41012