#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree<ll, null_type,less<ll>, rb_tree_tag,tree_order_statistics_node_update>   
using namespace std;
using namespace __gnu_pbds;
typedef long long ll; 
#define int long long
typedef unsigned long long lu;
typedef vector<ll> v;
typedef vector<vector<ll> > vv;
typedef vector<string>  vs;
typedef vector<pair<ll,ll>> vpr;
typedef long double ld;
#define f(i,n) for(ll i = 0; i < n; i++)
#define ff(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define endl "\n"
#define fi first
#define se second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define amax(x,y) if(y>x) x=y;
#define amin(x,y) if(y<x)x=y;
#define bg(x) x.begin()
#define sz(x) (ll)x.size()
#define in(x,n) for(ll i=0;i<n;i++)cin>>x[i]
#define out(x,n) for(ll i=0;i<n;i++)cout<<x[i]<<" " 
#define mxt(a) *(max_element(a.begin(),a.end()))
#define mnt(a) *(min_element(a.begin(),a.end())
#define tc ll t;cin>>t;while(t--)
typedef pair<ll,ll> pi;
#define yes cout<<"YES\n";
#define no cout<<"NO\n";
#define yesno(f) if(f) yes else no
const v dx = {1, -1, 0, 0};
const v dy = {0, 0, 1, -1};
const ld PI = 2 * acos(0.0);
ll cel(ll x1,ll y1){if((x1%y1)==0)return x1/y1;else return x1/y1+1;}
ll power(ll a,ll b,ll m)
{
    if(b==0)
        return 1;
    ll d=power(a,b/2,m);
    d=(d*d)%m;
    if(b&1)
        d=(d*a)%m;
    return d;
}
const ll mod=1e9+7;
int MOD(int a)
{
    if(a<0)
        a+=mod;
    if(a>=mod)
        a%=mod;
    return a;
}
// set_name.find_by_order(k) It returns to an iterator to the kth element (counting from zero) in the set in O(logn) time
// set_name.order_of_key(k) It returns to the number of items that are strictly smaller than our item k in O(logn) time.
/*string operations :
str.substr (x,y) : returns a substring str[x],str[x+1],...str[x+y-1]
str.substr (x) : returns a substring str[x],... end of string
str.find(qtr) : returns the first occurenece of qtr in str */
int32_t main()
{
    ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    int n;cin>>n;
    v powers(n+1,1);
    for(int i=1;i<=n;i++)
    {
        powers[i]=MOD(2*powers[i-1]);
    }
    map<pi,int>mapp;
    for(int i=0;i<n;i++)
    {
        int a,b;cin>>a>>b;
        bool neg=false;
        if((a >0 && b < 0) || (a<0 && b>0))
            neg=true;
        a=abs(a);
        b=abs(b);
        int g=__gcd(a,b);
        a/=g;
        b/=g;
        if(neg)
            a=-a;
        mapp[{a,b}]++;
    }
    int fans=1;
    map<pi,int>mapp2;
    for(auto it:mapp)
    {
        if(mapp2[it.fi])
            continue;
        int a=it.fi.fi,b=it.fi.se;
        int a1=b,b1=a;
        if(b1 < 0)
        {
            b1=-b1;
            a1=-a1;
        }
        a1=-a1;
        int A=it.se,B=mapp[{a1,b1}];
        // cout<<a<<" "<<b<<" "<<it.se<<" , "<<a1<<" "<<b1<<" "<<mapp[{a1,b1}]<<endl;
    int ans=0;
        ans+=(powers[A]+powers[B]-1);
        ans=MOD(ans);
        fans*=ans;
        fans=MOD(fans);
        mapp2[{a1,b1}]=1;
    }
    fans--;
    fans=MOD(fans);
    cout<<fans<<endl;
    return 0;
}