#include <stdio.h>

int x[200010];
int main()
{
	int a;
	scanf("%d",&a);
	for(int i=1;i<=a;i++) scanf("%d",&x[i]);
	
	int s = 0;
	for(int i=2;i<=a;i+=2) s += x[i]%2;
	if(s%2==1) printf("Alice");
	else printf("Bob");
}