#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace __gnu_pbds;
using namespace std;
#define ll long long
#define hii cout << "hii" << endl
#define int ll
#define endl '\n'
#define all(s) s.begin(), s.end()
 
template <class T> ostream& operator << (ostream &os, const vector<T> &v) { for (T i : v) os << i << ' '; return os; }
template <class T> ostream& operator << (ostream &os, const set<T> &v) { for (T i : v) os << i << ' '; return os; }
template <class T, class S> ostream& operator << (ostream &os, const pair<T, S> &v) { os << v.first << ' ' << v.second; return os; }
template <class T, class S> ostream& operator << (ostream &os, const unordered_map<T, S> &v) { for (auto i : v) os << '(' << i.first << "=>" << i.second << ')' << ' '; return os; } 
 
 
#ifndef ONLINE_JUDGE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <class Arg1> void __f(const char* name, Arg1&& arg1) { cerr << name << " : " << arg1 << endl; }
    template <class Arg1, class... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args) {
        const char* sep = strchr(names + 1, ',');
        cerr.write(names, sep - names) << " : " << arg1 << "  ";
        __f(sep + 1, args...);
    }
#else
#define trace(...) 0
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define _CRT_SECURE_NO_WARNINGS
#endif // ifndef ONLINE_JUDGE
 
 
const int N = 3e5 + 5;
const int MAXN = 3e5 + 5;
const int M = 3e5;
const int mod = 1e9 + 7;
const int MOD = 1e9 + 7;
const long double co = 0.0174533;
const int INF = 1e15;
const int LG = 21;
const long double PI = acos(-1);

int n;
int arr[N];

vector<int> g[N];
int pow(int a, int b, int m)
{
	int ans=1;
	while(b)
	{
		if(b&1)
			ans=(ans*a)%m;
		b/=2;
		a=(a*a)%m;
	}
	return ans;
}


void solve()
{
	int n;
	cin >> n;
	vector<pair<int, int>> queries;
	map<pair<int, int>, int> neg;
	map<pair<int, int>, int> pos;
	map<pair<int, int>, int> zero;
	set<pair<int, int>> s;
	set<pair<int, int>> m;
	int z = 0;
	for(int i = 1; i <= n; i++)
	{
		int a, b;
		cin >> a >> b;
		if(a == 0 and b == 0)
		{
			z++;
			continue;
		}
		if(a == 0)
		{
			zero[{0, 1}]++;
			continue;
		}
		else if(b == 0)
		{
			zero[{1, 0}]++;
			continue;	
		}
		int tempa = abs(a);
		int tempb = abs(b);
		int g = __gcd(tempa, tempb);
		tempa /= g;
		tempb /= g;
		if(a < 0) tempa *= -1;
		if(b < 0) tempb *= -1;
		a = tempa;
		b = tempb;
		queries.push_back({a, b});
		if((a < 0 and b > 0) or (a > 0 and b < 0))
		{
			m.insert({abs(a), abs(b)});
			neg[{abs(a), abs(b)}]++;
		}
		else
		{
			s.insert({abs(a), abs(b)});
			pos[{abs(a), abs(b)}]++;
		}
	}
	vector<pair<int, int>> comp;
	for(auto x : s)
	{
		comp.push_back({pos[{x.first, x.second}], neg[{x.second, x.first}]});	
	}
	for(auto x : m)
	{
		if(pos.count({x.second, x.first})) continue;
		comp.push_back({0LL, neg[{x.first, x.second}]});	
	}
	comp.push_back({zero[{0, 1}], zero[{1, 0}]});
	int ret = 1;
	for(auto x : comp)
	{
		trace(x);
		int way1 = (pow(2, x.first, mod) - 1 + mod) % mod;
		int way2 = (pow(2, x.second, mod) - 1 + mod) % mod;
		way1 += 1;
		way1 += way2;
		way1 %= mod;
		ret *= way1;
		ret %= mod;
	}
	if(z)
	{
		ret += (z);
	}
	ret -= 1;
	ret += mod;
	ret %= mod;
	cout << ret << endl;
}
 
 
int32_t main() 
{	
    ios_base:: sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	    int t = 1;
	    // cin >> t;
	while(t--)solve();
	return 0;
}

Measured memory_bytes: 49860