#include<bits/stdc++.h>
using namespace std;
int SG(int n,int b)
{
	if(b%2==1)
		return n%2;
	if(n%(b+1)==b)
		return 2;
	return (n%(b+1))%2;
}
int n;
int main()
{
	cin>>n;
	int ans=0;
	for(int i=1;i<=n;i++)
	{
		int a,b;
		cin>>a>>b;
		cout<<SG(a,b)<<endl;
		ans^=SG(a,b);
	}
	cout<<(ans==0?"Bob":"Alice")<<endl;
}