from collections import deque
N,M = list(map(int,input().split()))
edge = [[] for _ in range(N)]
edge_rev = [[] for _ in range(N)]
for _ in range(M):
    u,v = list(map(int,input().split()))
    u -= 1;v -= 1
    edge[u].append(v)
    edge_rev[v].append(u)
q_in = [set(i) for i in edge]

q = deque([i for i in range(N) if len(edge[i]) == 0])
is_win = [None for _ in range(N)]
visited = set()
while(q):
    now = q.popleft()

    if(now in visited):continue
    visited.add(now)
    
    if(any(not is_win[i] for i in edge[now])):
        is_win[now] = True
        for i in edge_rev[now]:
            q_in[i].discard(now)
            if(len(q_in[i]) == 0):
                q.append(i)
        continue

    if(all(is_win[i] for i in edge[now])):
        is_win[now] = False
        for i in edge_rev[now]:
            q.append(i)
        continue

print("Alice" if is_win[0] else "Bob" if is_win[0] == False else "Draw")