using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace Tasks
{
    public class E
    {
        static void Main(string[] args)
        {
            var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
            Console.SetOut(sw);
            Solve();
            Console.Out.Flush();
        }

        public static void Solve()
        {
            var N = Scanner.Scan<int>();
            var ab0 = 0;
            var a0 = 0;
            var b0 = 0;
            var dict = new Dictionary<(long a, long b), (long normal, long inverse)>();
            for (var i = 0; i < N; i++)
            {
                var (a, b) = Scanner.Scan<long, long>();
                if (a == 0 || b == 0)
                {
                    if (a != 0) b0++;
                    else if (b != 0) a0++;
                    else ab0++;
                    continue;
                }

                var gcd = GCD(Math.Abs(a), Math.Abs(b));
                a /= gcd;
                b /= gcd;
                if (b < 0) (a, b) = (-a, -b);

                var inverse = false;
                if ((a < 0 && b > 0) || (a > 0 && b < 0))
                {
                    inverse = true;
                    (a, b) = (b, -a);
                }

                if (!dict.ContainsKey((a, b))) dict[(a, b)] = (0, 0);
                var (x, y) = dict[(a, b)];

                if (inverse) y++;
                else x++;
                dict[(a, b)] = (x, y);
            }

            ModuloInteger answer = 1;
            foreach (var item in dict.Values)
                answer *= ModuloInteger.Power(2, item.normal) + ModuloInteger.Power(2, item.inverse) - 1;

            answer *= ModuloInteger.Power(2, a0) + ModuloInteger.Power(2, a0) - 1;
            answer += ab0 - 1;
            Console.WriteLine(answer);
        }

        public static long PowerMod(long x, long n, long m)
        {
            if (n < 0) throw new ArgumentException(nameof(n));
            if (m < 1) throw new ArgumentException(nameof(m));
            if (m == 1) return 0;
            uint r = 1;
            var y = (uint)(x < 0 ? x % m + m : x % m);
            var um = (uint)m;
            while (n > 1)
            {
                if (n % 1 == 1) r = r * y % um;
                y = y * y % um;
                n >>= 1;
            }
            return r;
        }

        public static long GCD(long a, long b) => b == 0 ? a : GCD(b, a % b);

        public readonly struct ModuloInteger
        {
            public long Value { get; }
            public const long Modulo = (long)1e9 + 7;
            public ModuloInteger(long data) => Value = (0 <= data ? data : data + Modulo) % Modulo;
            public static implicit operator long(ModuloInteger mint) => mint.Value;
            public static implicit operator int(ModuloInteger mint) => (int)mint.Value;
            public static implicit operator ModuloInteger(long val) => new ModuloInteger(val);
            public static implicit operator ModuloInteger(int val) => new ModuloInteger(val);
            public static ModuloInteger operator +(ModuloInteger a, ModuloInteger b) => a.Value + b.Value;
            public static ModuloInteger operator +(ModuloInteger a, long b) => a.Value + b;
            public static ModuloInteger operator +(ModuloInteger a, int b) => a.Value + b;
            public static ModuloInteger operator -(ModuloInteger a, ModuloInteger b) => a.Value - b.Value;
            public static ModuloInteger operator -(ModuloInteger a, long b) => a.Value - b;
            public static ModuloInteger operator -(ModuloInteger a, int b) => a.Value - b;
            public static ModuloInteger operator *(ModuloInteger a, ModuloInteger b) => a.Value * b.Value;
            public static ModuloInteger operator *(ModuloInteger a, long b) => a.Value * (b % Modulo);
            public static ModuloInteger operator *(ModuloInteger a, int b) => a.Value * (b % Modulo);
            public static ModuloInteger operator /(ModuloInteger a, ModuloInteger b) => a * b.Inverse();
            public static ModuloInteger operator /(ModuloInteger a, long b) => a.Value * Inverse(b);
            public static ModuloInteger operator /(ModuloInteger a, int b) => a.Value * Inverse(b);
            public static bool operator ==(ModuloInteger a, ModuloInteger b) => a.Value == b.Value;
            public static bool operator !=(ModuloInteger a, ModuloInteger b) => a.Value != b.Value;
            public bool Equals(ModuloInteger other) => Value == other.Value;
            public override bool Equals(object obj) => obj is ModuloInteger other && Equals(other);
            public override int GetHashCode() => Value.GetHashCode();
            public override string ToString() => Value.ToString();
            public ModuloInteger Inverse() => Inverse(Value);
            public static ModuloInteger Inverse(long a)
            {
                if (a == 0) return 0;
                var p = Modulo;
                var (x1, y1, x2, y2) = (1L, 0L, 0L, 1L);
                while (true)
                {
                    if (p == 1) return (x2 % Modulo + Modulo) % Modulo;
                    var div = a / p;
                    x1 -= x2 * div;
                    y1 -= y2 * div;
                    a %= p;
                    if (a == 1) return (x1 % Modulo + Modulo) % Modulo;
                    div = p / a;
                    x2 -= x1 * div;
                    y2 -= y1 * div;
                    p %= a;
                }
            }
            public ModuloInteger Power(long n) => Power(Value, n);
            public static ModuloInteger Power(ModuloInteger x, long n)
            {
                if (n < 0) throw new ArgumentException();
                var r = new ModuloInteger(1);
                while (n > 0)
                {
                    if ((n & 1) > 0) r *= x;
                    x *= x;
                    n >>= 1;
                }
                return r;
            }
        }

        public static class Scanner
        {
            private static Queue<string> queue = new Queue<string>();
            public static T Next<T>()
            {
                if (!queue.Any()) foreach (var item in Console.ReadLine().Trim().Split(" ")) queue.Enqueue(item);
                return (T)Convert.ChangeType(queue.Dequeue(), typeof(T));
            }
            public static T Scan<T>() => Next<T>();
            public static (T1, T2) Scan<T1, T2>() => (Next<T1>(), Next<T2>());
            public static (T1, T2, T3) Scan<T1, T2, T3>() => (Next<T1>(), Next<T2>(), Next<T3>());
            public static (T1, T2, T3, T4) Scan<T1, T2, T3, T4>() => (Next<T1>(), Next<T2>(), Next<T3>(), Next<T4>());
            public static (T1, T2, T3, T4, T5) Scan<T1, T2, T3, T4, T5>() => (Next<T1>(), Next<T2>(), Next<T3>(), Next<T4>(), Next<T5>());
            public static IEnumerable<T> ScanEnumerable<T>() => Console.ReadLine().Trim().Split(" ").Select(x => (T)Convert.ChangeType(x, typeof(T)));
        }
    }
}
