import sys

def solve():
    input = sys.stdin.read
    data = input().split()
    if not data:
        return
    
    N = int(data[0])
    A = [int(x) for x in data[1:]]
    
    T = 0
    for a in A:
        if T == 2:
            continue
        elif T == 0:
            if a == 1:
                T = 2
            elif a % 2 == 0:
                T = 0
            else:
                T = 1
        elif T == 1:
            if a % 2 == 1:
                T = 0
            else:
                T = 1
                
    if T == 1 or T == 2:
        print("Alice")
    else:
        print("Bob")

if __name__ == '__main__':
    solve()