using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Text; class TEST{ static void Main(){ Sol mySol =new Sol(); mySol.Solve(); } } class Sol{ public void Solve(){ int[] cnt = new int[4]; for(int i=0;i<N;i++){ cnt[((X[i] & 1) << 1) + (Y[i] & 1)]++; } int tot = cnt.Select(v => v / 2).Sum(); Console.WriteLine(tot % 2 == 0 ? "Bob" : "Alice"); } int N; int[] X,Y; public Sol(){ N = ri(); X = new int[N]; Y = new int[N]; for(int i=0;i<N;i++){ var d = ria(); X[i] = d[0]; Y[i] = d[1]; } } static String rs(){return Console.ReadLine();} static int ri(){return int.Parse(Console.ReadLine());} static long rl(){return long.Parse(Console.ReadLine());} static double rd(){return double.Parse(Console.ReadLine());} static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);} static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));} static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));} static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));} }