結果
問題 | No.977 アリス仕掛けの摩天楼 |
ユーザー | kei |
提出日時 | 2020-01-31 21:36:57 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 38 ms / 2,000 ms |
コード長 | 2,996 bytes |
コンパイル時間 | 1,655 ms |
コンパイル使用メモリ | 174,052 KB |
実行使用メモリ | 9,020 KB |
最終ジャッジ日時 | 2024-09-17 07:22:11 |
合計ジャッジ時間 | 2,537 ms |
ジャッジサーバーID (参考情報) |
judge6 / judge3 |
(要ログイン)
テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 1 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 5 ms
6,940 KB |
testcase_14 | AC | 5 ms
6,940 KB |
testcase_15 | AC | 4 ms
6,944 KB |
testcase_16 | AC | 5 ms
6,944 KB |
testcase_17 | AC | 4 ms
6,948 KB |
testcase_18 | AC | 13 ms
6,940 KB |
testcase_19 | AC | 12 ms
6,940 KB |
testcase_20 | AC | 18 ms
6,940 KB |
testcase_21 | AC | 28 ms
7,680 KB |
testcase_22 | AC | 37 ms
8,832 KB |
testcase_23 | AC | 38 ms
8,960 KB |
testcase_24 | AC | 37 ms
9,020 KB |
testcase_25 | AC | 34 ms
8,960 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T>& V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> >& Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T>& mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } template<typename T>vector<T> make_v(size_t a){return vector<T>(a);} template<typename T,typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));} template<typename T,typename V> typename enable_if<is_class<T>::value==0>::type fill_v(T &t,const V &v){t=v;} template<typename T,typename V> typename enable_if<is_class<T>::value!=0>::type fill_v(T &t,const V &v){for(auto &e:t) fill_v(e,v);} /* <url:> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ /* UnionFind */ struct UnionFind { vector<int> data; UnionFind(int size) : data(size, -1) { } bool unionSet(int x, int y) { x = root(x); y = root(y); if (x != y) { if (data[y] < data[x]) swap(x, y); data[x] += data[y]; data[y] = x; } return x != y; } bool findSet(int x, int y) { return root(x) == root(y); } int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); } int size(int x) { return -data[root(x)]; } }; template<class Type> Type solve(Type res = Type()){ int N; cin >> N; UnionFind UF(N); vector<vector<int>> G(N); for(int i = 0; i < N-1;i++){ int u,v; cin >> u >> v; UF.unionSet(u,v); G[u].push_back(v); G[v].push_back(u); } int sz = UF.size(0); if(sz == N) return "Bob"; if(sz == 1 || sz == N-1){ bool ok = true; for(int i = 0; i < N;i++){ if(UF.size(i) == 1) continue; if(G[i].size() == 2) continue; ok = false; } if(ok) return "Bob"; } return "Alice"; return res; } int main(void) { cin.tie(0); ios::sync_with_stdio(false); //solve<ll>(0); cout << fixed << setprecision(12) << solve<string>() << endl; return 0; }