#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll _=105;
ll n,x,t,s,a[_],b[_],l[_],r[_],i,j;bool f[_];
inline void p(ll x){r[l[x]]=r[x];l[r[x]]=l[x];f[x]=1;}
int main(){
	cin>>n;
	for(i=1;i<=n;i++)cin>>a[i]>>b[i],l[i%n+1]=i,r[i]=i%n+1;
	if(n&1)cout<<"Beatrice\n"<<flush,cin>>x,p(x);
	else cout<<"Alberto\n"<<flush;
	for(i=2+(n&1);i<n;i+=2){
		t=0;s=4e18;
		for(j=1;j<=n;j++)if(!f[j]){
			x=abs((a[l[j]]-a[j])*(b[r[j]]-b[j])-(a[r[j]]-a[j])*(b[l[j]]-b[j]));
			if(x<s)s=x,t=j;
		}
		cout<<t<<'\n'<<flush;p(t);
		cin>>x;p(x);
	}
}