#include<bits/stdc++.h>
using namespace std;

int main() {
    int n,m;
    cin >> n >> m;
    vector<vector<int>> g(n);
    vector<vector<int>> rg(n);

    vector<int> out(n);
    for(int i = 0; i < m; i++) {
        int u,v;
        cin >> u >> v;
        u--,v--;
        g[u].push_back(v);
        rg[v].push_back(u);
        out[u]++;
    }

    queue<int> win;
    vector<int> result(n, 0);
    for(int i = 0; i < n; i++) {
        if(out[i] == 0) {
            result[i] = -1;
            for(auto to: rg[i]) if(result[to] == 0) {
                result[to] = 1;
                win.push(to);
            }
        }
    }

    while(win.size()) {
        int now = win.front(); win.pop();

        for(auto to: rg[now]) {
            out[to]--;
            if(out[to] == 0) {
                result[to] = -1;
                for(auto t: rg[to]) if(result[t] == 0) {
                    result[t] = 1;
                    win.push(t);
                }
            }
        }
    }

    for(int i = 0; i < n; i++) cerr << result[i] << " ";
    cerr << endl;

    cout << vector<string>{"Bob", "Draw", "Alice"}[result[0]+1] << endl;
}