#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ll long long
#define endl '\n'
#define all(a) a.begin(), a.end()
#define pb push_back
#define x first
#define y second
#define debug(_x) cout << #_x << '=' << _x << endl
typedef pair<int, int> PII;
using i64 = long long;
const int mod = 998244353;
const int N = 1e5 + 10, M = 20;

vector<int> g[N];

void solve()
{
    int n;
    cin >> n;
    for (int i = 1; i < n; i++)
    {
        int u, v;
        cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }
    int cnt = 0;
    for (int i = 1; i <= n; i++)
    {
        if (g[i].size() == 1)
            cnt++;
    }
    if ((n - cnt) & 1)
    {
        cout << "Bob";
    }
    else
        cout << "Alice";
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int _ = 1;
    // cin >> _;

    while (_--)
        solve();

    return 0;
}