n, m = map(int, input().split())
node = [[] for _ in range(n)]
V = [0] * n
for i in range(m):
    u, v = [int(x)-1 for x in input().split()]
    node[v].append(u)
    V[u] += 1

Ans = [-1] * n 
S = [i for i in range(n) if not V[i]]
for s in S:
    Ans[s] = 0
while S:
    now = S.pop()
    if not Ans[now]:
        for nxt in node[now]:
            if Ans[nxt] == -1:
                Ans[nxt] = 1
                S.append(nxt)
    else:
        for nxt in node[now]:
            if Ans[nxt] == -1:
                V[nxt] -= 1
                if V[nxt] == 0:
                    Ans[nxt] = 0
                    S.append(nxt)

T = ["Bob", "Alice", "Draw"]
print(T[Ans[0]])