from collections import deque

N, M = map(int, input().split())
G = [[] for _ in range(N)]
cnt = [0]*N
for _ in range(M):
    u, v = map(int, input().split())
    u, v = u-1, v-1
    G[v].append(u)
    cnt[u] += 1

ans = [-1]*N
que = deque()
for i in range(N):
    if cnt[i] == 0:
        ans[i] = 0
        que.append(i)

while que:
    n = que.popleft()
    for v in G[n]:
        if ans[v] != -1:
            continue
        if ans[n] == 0:
            ans[v] = 1
            que.append(v)
        else:
            cnt[v] -= 1
            if cnt[v] == 0:
                ans[v] = 0
                que.append(v)

print("Alice" if ans[0] == 1 else "Bob" if ans[0] == 0 else "Draw")