using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Numerics;
using System.Text;
using static System.Math;

namespace CSharpSpiral {
	class Program {
		static void Main(string[] args) {
			var sw = new StreamWriter(Console.OpenStandardOutput()) {
				AutoFlush=
#if DEBUG
			true
#else
			false
#endif
			};
			Console.SetOut(sw);
			new Program().Solve(new ConsoleInput(
#if DEBUG
			new StreamReader("../../../inputData.txt")
#else
			Console.In
#endif
			, ' '));
			Console.Out.Flush();
		}
		public void Solve(ConsoleInput cin) {
			var N = cin.ReadInt;
			var D = new Dictionary<(long a, long b), (int posi, int nega)>();
			var bad = 0;
			for(int i = 0; i<N; i++) {
				var A = cin.ReadLong;
				var B = cin.ReadLong;
				var g = Abs(gcd(A, B));
				if(B==0&&A==0) {
					bad++;
					continue;
				} else if(B==0) A=1;
				else if(A==0) B=1;
				else {
					A/=g; B/=g;
					if(A<0) {
						A=-A; B=-B;
					}
				}
				var arg = B<0 ? (-B, A) : (A, B);
				var nega = B<0;
				if(D.ContainsKey(arg)) {
					var da = D[arg];
					D[arg]=nega ? (da.posi, da.nega+1) : (da.posi+1, da.nega);
				} else {
					D.Add(arg, nega ? (0, 1) : (1, 0));
				}
			}
			var F = new QuotientRing();
			var Res = 1L;
			if(D.Count>0) {
				foreach(var v in D.Values) {
					Res=F.Mul(Res, F.Pow(2, v.posi)+F.Pow(2, v.nega)-1);
				}
			}
			if(bad>0) Res=F.Add(Res, bad);
			Console.WriteLine(F.Sub(Res,1));
		}
		private static long gcd(long a, long b) {
			if(b==0) 
				return a;
			return gcd(b, a%b);
		}
	}
	static class ExtendClass {
		public static string Join<T>(this IEnumerable<T> X, string separator = " ") => string.Join(separator, X);
	}
	class ConsoleInput {
		private readonly TextReader _stream;
		private readonly char _separator = ' ';
		private readonly Queue<string> inputStream;
		public ConsoleInput(TextReader stream, char separator = ' ') {
			this._separator=separator;
			this._stream=stream;
			inputStream=new Queue<string>();
		}
		public string Read {
			get {
				if(inputStream.Count!=0) return inputStream.Dequeue();
				string[] tmp = _stream.ReadLine().Split(_separator);
				for(int i = 0; i<tmp.Length; ++i)
					inputStream.Enqueue(tmp[i]);
				return inputStream.Dequeue();
			}
		}
		public string ReadLine { get { return _stream.ReadLine(); } }
		public int ReadInt { get { return int.Parse(Read); } }
		public long ReadLong { get { return long.Parse(Read); } }
		public double ReadDouble { get { return double.Parse(Read); } }
		public string[] ReadStrArray(long N) {
			var ret = new string[N];
			for(long i = 0; i<N; ++i)
				ret[i]=Read;
			return ret;
		}
		public int[] ReadIntArray(long N) { var ret = new int[N]; for(long i = 0; i<N; ++i) ret[i]=ReadInt; return ret; }
		public long[] ReadLongArray(long N) { var ret = new long[N]; for(long i = 0; i<N; ++i) ret[i]=ReadLong; return ret; }
		public double[] ReadDoubleArray(long N) { var ret = new double[N]; for(long i = 0; i<N; ++i) ret[i]=ReadDouble; return ret; }
		public bool isEOF {
			get { return _stream.Peek()==-1; }
		}
	}
	class UnionFindForest {
		public class Node {
			public int value { get; set; }
			public virtual Node parent { get; set; }
			public virtual Node root {
				get {
					var path = new Queue<Node>();
					var res = this;
					while(res.parent!=res) {
						path.Enqueue(res);
						res=res.parent;
					}
					while(path.Any())
						path.Dequeue().parent=res;
					return res;
				}
			}
			public int rank { get; private set; }    //meanful iff root
			public void rankIncrement() => rank++;
			public Node(int _value) {
				value=_value;
				parent=this;
				rank=1;
			}
		}

		private readonly Dictionary<int, Node> Registry = new Dictionary<int, Node>();
		public UnionFindForest(int N) {
			for(int i = 0; i<N; i++) Add(i);
		}
		public void Union(int x, int y) => Union(Registry[x], Registry[y]);
		public void Union(Node X, Node Y) {
			var RX = X.root;
			var RY = Y.root;
			switch(RX.rank.CompareTo(RY.rank)) {
				case 1:
					RY.parent=RX;
					break;
				case -1:
					RX.parent=RY;
					break;
				default:
					RX.parent=RY;
					RY.rankIncrement();
					break;
			}
		}
		public bool Find(int x, int y) => Find(Registry[x], Registry[y]);
		public bool Find(Node X, Node Y) => X.root==Y.root;
		public virtual void Add(int id) {
			var N = new Node(id);
			Registry.Add(id, N);
		}
		public Dictionary<Node, int> TallyDegrees() {
			var Roots = new Dictionary<Node, int>();
			foreach(var node in Registry.Values) {
				if(Roots.Keys.Contains(node))
					Roots[node]++;
				else
					Roots.Add(node, 1);
			}
			return Roots;
		}
		public int[] Degrees() {
			var D = TallyDegrees();
			var res = new int[Registry.Count];
			for(int i = 0; i<Registry.Count; i++)
				res[i]=D[Registry[i]];
			return res;
		}
		public int TreeCount() {
			var D = TallyDegrees();
			return D.Count;
		}
	}
	class ResidueField: QuotientRing {
		public ResidueField(int _modulo = 1000*1000*1000+7) : base(_modulo) { }
		private static long extgcd(long a, long b, ref long x, ref long y) {
			if(b==0) {
				x=1; y=0; return a;
			}
			var q = a/b;
			var g = extgcd(b, a-q*b, ref x, ref y);
			var z = x-q*y;
			x=y; y=z;
			return g;
		}
		public long Inv(long a) {
			if(a==0) throw new DivideByZeroException();
			long x = 0, y = 0;
			extgcd(a, modulo, ref x, ref y);
			return mod(x);
		}
		public long Div(long a, long b) => Mul(a, Inv(b));
		public long Combination(int n, int k) {
			if(k<0||k>n) return 0;
			if(n-k<k) k=n-k;
			return Div(Permutation(n, k), Factorial(k));
		}
		public override long Calculate(params object[] RPN) {
			var S = new Stack<long>();
			foreach(var token in RPN) {
				var type = token.GetType();
				if(type==typeof(int)) {
					S.Push((int)token);
				} else if(type==typeof(long)) {
					S.Push((long)token);
				} else if(type==typeof(char)) {
					long v1 = 0L, v2 = 0L;
					v2=S.Pop();
					HashSet<char> unaries = new HashSet<char>() { '!' };
					if(!unaries.Contains((char)token))
						v1=S.Pop();
					long res;
					switch((char)token) {
						case '+': res=Add(v1, v2); break;
						case '-': res=Sub(v1, v2); break;
						case '*': res=Mul(v1, v2); break;
						case '/': res=Div(v1, v2); break;
						case '^': res=Pow(v1, v2); break;
						case '!': res=Factorial((int)v2); break;
						case 'C': res=Combination((int)v1, (int)v2); break;
						case 'P': res=Permutation((int)v1, (int)v2); break;
						default: throw new InvalidOperationException();
					}
					S.Push(res);
				} else throw new InvalidOperationException();
			}
			return S.Peek();
		}
	}
	class QuotientRing {
		public readonly long modulo;
		public QuotientRing(int mModulo = 1000*1000*1000+7) {
			modulo=mModulo;
		}
		private long[] factorialTable = { 1 };
		private int factorialTableLastIndex { get { return factorialTable.Length-1; } }
		public long mod(long x) => x<0 ? x%modulo+modulo : x%modulo;
		public long Add(long a, long b) => mod(a+b);
		public long Sub(long a, long b) => mod(a-b);
		public long Mul(long a, long b) => mod(a*b);
		public long Pow(long a, long n) {
			if(n==0) return 1;
			var R = 1L;
			n=n<0 ? n%(modulo-1)+(modulo-1) : n%(modulo-1);
			for(; n>0; a=Mul(a, a), n>>=1) {
				if((n&1)!=0) R=Mul(R, a);
			}
			return R;
		}
		private void ExpandFactorialTable(int N) {
			var k = factorialTableLastIndex;
			Array.Resize(ref factorialTable, N+1);
			for(int i = k+1; i<=N; i++) {
				if(i==0) { factorialTable[i]=1; continue; }
				factorialTable[i]=Mul(factorialTable[i-1], i);
			}
		}
		public long Factorial(int n) {
			if(n>factorialTableLastIndex)
				ExpandFactorialTable(n);
			return factorialTable[n];
		}
		public long Permutation(int n, int k) {
			if(k<0||k>n) return 0;
			var Res = 1L;
			for(int i = 0; i<k; i++)
				Res=Mul(Res, n-i);
			return Res;
		}
		public virtual long Calculate(params object[] RPN) {
			var S = new Stack<long>();
			foreach(var token in RPN) {
				var type = token.GetType();
				if(type==typeof(int)||type==typeof(long)) {
					S.Push((long)token);
				} else if(type==typeof(char)) {
					long v1 = 0L, v2 = 0L;
					v2=S.Pop();
					HashSet<char> unaries = new HashSet<char>() { '!' };
					if(!unaries.Contains((char)token))
						v1=S.Pop();
					long res;
					switch((char)token) {
						case '+': res=Add(v1, v2); break;
						case '-': res=Sub(v1, v2); break;
						case '*': res=Mul(v1, v2); break;
						case '^': res=Pow(v1, v2); break;
						case '!': res=Factorial((int)v2); break;
						default: throw new InvalidOperationException();
					}
					S.Push(res);
				} else throw new InvalidOperationException();
			}
			return S.Peek();
		}
	}
}