#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <cstring>
#include <cmath>
#include <limits>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <functional>
#include <iomanip>

using namespace std;

#ifdef LOCAL
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#else
#define eprintf(...) 42
#endif
using ll = long long;
using vll = std::vector<ll>;
using vvll = std::vector<vll>;
using vvvll = std::vector<vvll>;
#define reps(i, S, E) for (ll i = (S); i <= (E); i++)
#define rep(i, N) reps(i, 0, N-1)
#define deps(i, E, S) for (ll i = (E); i >= (S); i--)
#define dep(i, N) deps(i, N-1, 0)
const ll INF = 1LL << 60;
const int INF_INT = 1 << 30;

template<class T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; }return false; }
template<class T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; }return false; }
struct mll {
	static ll MOD;
	ll val;
	mll(ll v = 0) : val(v % MOD) { if (val < 0) val += MOD; }
	mll operator - () const { return -val; }
	mll operator + (const mll &b) const { return val + b.val; }
	mll operator - (const mll &b) const { return val - b.val; }
	mll operator * (const mll &b) const { return val * b.val; }
	mll operator / (const mll &b) const { return mll(*this) /= b; }
	mll operator + (ll b) const { return *this + mll(b); }
	mll operator - (ll b) const { return *this - mll(b); }
	mll operator * (ll b) const { return *this * mll(b); }
	friend mll operator + (ll a, const mll &b) { return b + a; }
	friend mll operator - (ll a, const mll &b) { return -b + a; }
	friend mll operator * (ll a, const mll &b) { return b * a; }
	mll &operator += (const mll &b) { val = (val + b.val) % MOD; return *this; }
	mll &operator -= (const mll &b) { val = (val + MOD - b.val) % MOD; return *this; }
	mll &operator *= (const mll &b) { val = (val*b.val) % MOD; return *this; }
	mll &operator /= (const mll &b) {
		ll c = b.val, d = MOD, u = 1, v = 0;
		while (d) {
			ll t = c / d;
			c -= t * d; swap(c, d);
			u -= t * v; swap(u, v);
		}
		val = val * u % MOD;
		if (val < 0) val += MOD;
		return *this;
	}
	mll &operator += (ll b) { return *this += mll(b); }
	mll &operator -= (ll b) { return *this -= mll(b); }
	mll &operator *= (ll b) { return *this *= mll(b); }
	mll &operator /= (ll b) { return *this /= mll(b); }
	bool operator == (const mll &b) { return val == b.val; }
	bool operator != (const mll &b) { return val != b.val; }
	bool operator == (ll b) { return *this == mll(b); }
	bool operator != (ll b) { return *this != mll(b); }
	friend bool operator == (ll a, const mll &b) { return mll(a) == b.val; }
	friend bool operator != (ll a, const mll &b) { return mll(a) != b.val; }
	friend ostream &operator << (ostream &os, const mll &a) { return os << a.val; }
	friend istream &operator >> (istream &is, mll &a) { return is >> a.val; }
	static mll Combination(ll a, ll b) {
		chmin(b, a - b);
		if (b < 0) return mll(0);
		mll c = 1;
		rep(i, b) c *= a - i;
		rep(i, b) c /= i + 1;
		return c;
	}
};
using vmll = std::vector<mll>;
using vvmll = std::vector<vmll>;
using vvvmll = std::vector<vvmll>;
using vvvvmll = std::vector<vvvmll>;

struct Fast {
	Fast() {
		cin.tie(0);
		ios::sync_with_stdio(false);
		cout << fixed << setprecision(std::numeric_limits<double>::max_digits10);
	}
} fast; //cin,cout高速化のおまじない＋桁数指定

ll mll::MOD = (ll)(1e9 + 7);// 998244353ll;


//--debug--
#ifdef LOCAL
void _debug_out_(vvll x) {
	rep(i, (ll)x.size()) {
		rep(j, (ll)x[i].size()) {
			eprintf("%lld ", x[i][j]);
		}
		eprintf("\n");
	}
	eprintf("\n");
}
void _debug_out_(vll x) {
	rep(i, (ll)x.size()) {
		eprintf("%lld ", x[i]);
	}
	eprintf("\n");
}
#define debug_out(...) _debug_out_(__VA_ARGS__)
#else
#define debug_out(...) 42
#endif
//--debug--

ll GCD(ll a, ll b) {
	if (a < b) {
		ll temp = a;
		a = b;
		b = temp;
	}

	ll r = a % b;
	while (r != 0) {
		a = b;
		b = r;
		r = a % b;
	}

	return b;
}

const ll MAX = 200001;
const ll MOD = mll::MOD;
ll fac[MAX], finv[MAX], inv[MAX];

//テーブルを作る前処理
void COMinit() {
	fac[0] = fac[1] = 1;
	finv[0] = finv[1] = 1;
	inv[1] = 1;
	for (ll i = 2; i < MAX; i++) {
		fac[i] = fac[i - 1] * i % MOD;
		inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
		finv[i] = finv[i - 1] * inv[i] % MOD;
	}
}

//二項係数計算
mll COM(ll n, ll k) {
	if (n < k) return 0;
	if (n < 0 || k < 0) return 0;
	return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}

ll mod_pow(ll x, ll n, ll mod) {
	ll ret = 1;
	while (n > 0) {
		if (n & 1) {
			(ret *= x) %= mod;
		}
		(x *= x) %= mod;
		n >>= 1;
	}
	return ret;
}

int main() {
	ll N;
	cin >> N;
	vector<ll> A(N);
	vector<ll> B(N);
	rep(i, N) {
		cin >> A[i] >> B[i];
	}

	ll bad = 0;
	map<pair<ll, ll>, ll> mp; //key1をプラスにする

	rep(i, N) {
		ll a = A[i];
		ll b = B[i];

		if (a == 0 && b == 0) {

		}
		else if (a == 0) {
			b = 1;
		}
		else if (b == 0) {
			a = 1;
		}
		else {
			if (a < 0) {
				a *= -1;
				b *= -1;
			}

			ll g = GCD(abs(a), abs(b));
			a /= g;
			b /= g;
		}

		mp[make_pair(a, b)]++;
	}

	COMinit();
	mll zero_pair = mp[make_pair(0, 0)];
	mp.erase(make_pair(0, 0));

	ll a = mp[make_pair(0, 1)];
	ll b = mp[make_pair(1, 0)];
	mll result = mod_pow(2, a, mll::MOD) + mod_pow(2, b, mll::MOD) - 1;

	auto begin = mp.begin(), end = mp.end();
	for (auto iter = begin; iter != end; iter++) {
		// iter->first: key, iter->second: value
		auto p = iter->first;

		if (p.first == 0 || p.second == 0) {
			continue;
		}

		if (iter->second == 0) {
			continue;
		}

		a = p.first;
		b = p.second;
		if (b < 0) {
			a *= -1;
			b *= -1;
		}

		ll num = mp[make_pair(b, -a)];
		result *= mod_pow(2, iter->second, mll::MOD) + mod_pow(2, num, mll::MOD) - 1;

		mp[make_pair(b, -a)] = 0;
	}

	result += zero_pair;
	result -= 1; //空を抜く

	cout << result << endl;

	return 0;
}


Measured memory_bytes: 35752