#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define all(x) (x).begin(),(x).end() #define rep(i,m,n) for(int i = m;i < n;++i) #define pb push_back #define fore(i,a) for(auto &i:a) #define rrep(i,m,n) for(int i = m;i >= n;--i) #define INF INT_MAX/2 using namespace std; using ll = unsigned long long int; using R = double; using Data = pair>; const ll MOD = 1e9 + 7; const ll inf = 1LL << 50; struct edge { ll from; ll to; ll cost; }; int d[4]; int main() { int n; cin >> n; rep(i, 0, n) { int x, y; cin >> x >> y; int c1 = x % 2; int c2 = y % 2; if (c1 && c2) { d[0]++; } else if (!c1 && c2) { d[1]++; } else if (c1 && !c2) { d[2]++; } else { d[3]++; } } int ans = d[0] / 2 + d[1] / 2 + d[2] / 2 + d[3] / 2; if (ans % 2) { cout << "Alice" << endl; } else { cout << "Bob" << endl; } return 0; }