結果
問題 | No.1254 補強への架け橋 |
ユーザー | raven7959 |
提出日時 | 2022-09-02 14:50:47 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 101 ms / 2,000 ms |
コード長 | 5,396 bytes |
コンパイル時間 | 2,479 ms |
コンパイル使用メモリ | 217,796 KB |
実行使用メモリ | 21,436 KB |
最終ジャッジ日時 | 2024-11-15 19:48:48 |
合計ジャッジ時間 | 14,071 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 2 ms
5,248 KB |
testcase_16 | AC | 2 ms
5,248 KB |
testcase_17 | AC | 2 ms
5,248 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 2 ms
5,248 KB |
testcase_20 | AC | 2 ms
5,248 KB |
testcase_21 | AC | 2 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 1 ms
5,248 KB |
testcase_24 | AC | 2 ms
5,248 KB |
testcase_25 | AC | 2 ms
5,248 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 2 ms
5,248 KB |
testcase_28 | AC | 2 ms
5,248 KB |
testcase_29 | AC | 2 ms
5,248 KB |
testcase_30 | AC | 2 ms
5,248 KB |
testcase_31 | AC | 2 ms
5,248 KB |
testcase_32 | AC | 2 ms
5,248 KB |
testcase_33 | AC | 2 ms
5,248 KB |
testcase_34 | AC | 2 ms
5,248 KB |
testcase_35 | AC | 2 ms
5,248 KB |
testcase_36 | AC | 2 ms
5,248 KB |
testcase_37 | AC | 2 ms
5,248 KB |
testcase_38 | AC | 2 ms
5,248 KB |
testcase_39 | AC | 2 ms
5,248 KB |
testcase_40 | AC | 2 ms
5,248 KB |
testcase_41 | AC | 2 ms
5,248 KB |
testcase_42 | AC | 2 ms
5,248 KB |
testcase_43 | AC | 2 ms
5,248 KB |
testcase_44 | AC | 2 ms
5,248 KB |
testcase_45 | AC | 2 ms
5,248 KB |
testcase_46 | AC | 2 ms
5,248 KB |
testcase_47 | AC | 2 ms
5,248 KB |
testcase_48 | AC | 2 ms
5,248 KB |
testcase_49 | AC | 2 ms
5,248 KB |
testcase_50 | AC | 2 ms
5,248 KB |
testcase_51 | AC | 2 ms
5,248 KB |
testcase_52 | AC | 2 ms
5,248 KB |
testcase_53 | AC | 2 ms
5,248 KB |
testcase_54 | AC | 2 ms
5,248 KB |
testcase_55 | AC | 2 ms
5,248 KB |
testcase_56 | AC | 2 ms
5,248 KB |
testcase_57 | AC | 2 ms
5,248 KB |
testcase_58 | AC | 2 ms
5,248 KB |
testcase_59 | AC | 2 ms
5,248 KB |
testcase_60 | AC | 2 ms
5,248 KB |
testcase_61 | AC | 3 ms
5,248 KB |
testcase_62 | AC | 2 ms
5,248 KB |
testcase_63 | AC | 6 ms
5,248 KB |
testcase_64 | AC | 3 ms
5,248 KB |
testcase_65 | AC | 5 ms
5,248 KB |
testcase_66 | AC | 4 ms
5,248 KB |
testcase_67 | AC | 3 ms
5,248 KB |
testcase_68 | AC | 4 ms
5,248 KB |
testcase_69 | AC | 5 ms
5,248 KB |
testcase_70 | AC | 3 ms
5,248 KB |
testcase_71 | AC | 3 ms
5,248 KB |
testcase_72 | AC | 5 ms
5,248 KB |
testcase_73 | AC | 3 ms
5,248 KB |
testcase_74 | AC | 5 ms
5,248 KB |
testcase_75 | AC | 5 ms
5,248 KB |
testcase_76 | AC | 3 ms
5,248 KB |
testcase_77 | AC | 3 ms
5,248 KB |
testcase_78 | AC | 6 ms
5,248 KB |
testcase_79 | AC | 6 ms
5,248 KB |
testcase_80 | AC | 5 ms
5,248 KB |
testcase_81 | AC | 6 ms
5,248 KB |
testcase_82 | AC | 6 ms
5,248 KB |
testcase_83 | AC | 72 ms
11,904 KB |
testcase_84 | AC | 66 ms
11,776 KB |
testcase_85 | AC | 36 ms
8,448 KB |
testcase_86 | AC | 50 ms
10,752 KB |
testcase_87 | AC | 58 ms
11,392 KB |
testcase_88 | AC | 9 ms
5,248 KB |
testcase_89 | AC | 62 ms
11,904 KB |
testcase_90 | AC | 38 ms
8,960 KB |
testcase_91 | AC | 30 ms
7,680 KB |
testcase_92 | AC | 16 ms
5,632 KB |
testcase_93 | AC | 49 ms
10,240 KB |
testcase_94 | AC | 46 ms
9,472 KB |
testcase_95 | AC | 43 ms
9,600 KB |
testcase_96 | AC | 57 ms
11,520 KB |
testcase_97 | AC | 25 ms
7,040 KB |
testcase_98 | AC | 62 ms
11,648 KB |
testcase_99 | AC | 35 ms
8,320 KB |
testcase_100 | AC | 75 ms
12,288 KB |
testcase_101 | AC | 14 ms
5,504 KB |
testcase_102 | AC | 8 ms
5,248 KB |
testcase_103 | AC | 16 ms
5,632 KB |
testcase_104 | AC | 21 ms
6,528 KB |
testcase_105 | AC | 49 ms
10,240 KB |
testcase_106 | AC | 27 ms
7,424 KB |
testcase_107 | AC | 61 ms
12,032 KB |
testcase_108 | AC | 62 ms
11,776 KB |
testcase_109 | AC | 49 ms
10,240 KB |
testcase_110 | AC | 43 ms
9,600 KB |
testcase_111 | AC | 49 ms
9,856 KB |
testcase_112 | AC | 21 ms
6,272 KB |
testcase_113 | AC | 40 ms
9,344 KB |
testcase_114 | AC | 27 ms
7,168 KB |
testcase_115 | AC | 10 ms
5,248 KB |
testcase_116 | AC | 31 ms
7,936 KB |
testcase_117 | AC | 20 ms
6,272 KB |
testcase_118 | AC | 60 ms
11,520 KB |
testcase_119 | AC | 34 ms
8,320 KB |
testcase_120 | AC | 61 ms
11,136 KB |
testcase_121 | AC | 18 ms
5,888 KB |
testcase_122 | AC | 30 ms
7,808 KB |
testcase_123 | AC | 2 ms
5,248 KB |
testcase_124 | AC | 100 ms
21,436 KB |
testcase_125 | AC | 101 ms
21,432 KB |
ソースコード
#include <bits/stdc++.h> #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,fma,abm,mmx,avx,avx2") #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define rrep(i, n) for (int i = (int)(n - 1); i >= 0; i--) #define all(x) (x).begin(), (x).end() #define sz(x) int(x.size()) #define yn(joken) cout<<((joken) ? "Yes" : "No")<<"\n" #define YN(joken) cout<<((joken) ? "YES" : "NO")<<"\n" using namespace std; using ll = long long; using vi = vector<int>; using vl = vector<ll>; using vs = vector<string>; using vc = vector<char>; using vd = vector<double>; using vld = vector<long double>; using vvi = vector<vector<int>>; using vvl = vector<vector<ll>>; using vvs = vector<vector<string>>; using vvc = vector<vector<char>>; using vvd = vector<vector<double>>; using vvld = vector<vector<long double>>; using vvvi = vector<vector<vector<int>>>; using vvvl = vector<vector<vector<ll>>>; using vvvvi = vector<vector<vector<vector<int>>>>; using vvvvl = vector<vector<vector<vector<ll>>>>; using pii = pair<int,int>; using pll = pair<ll,ll>; const int INF = 1e9; const ll LINF = 2e18; template <class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; } template <class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; } bool ispow2(int i) { return i && (i & -i) == i; } bool ispow2(ll i) { return i && (i & -i) == i; } template <class T> vector<T> make_vec(size_t a) { return vector<T>(a); } template <class T, class... Ts> auto make_vec(size_t a, Ts... ts) { return vector<decltype(make_vec<T>(ts...))>(a, make_vec<T>(ts...)); } template <typename T> istream& operator>>(istream& is, vector<T>& v) { for (int i = 0; i < int(v.size()); i++) { is >> v[i]; } return is; } template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) { for (int i = 0; i < int(v.size()); i++) { os << v[i]; if (i < int(v.size()) - 1) os << ' '; } return os; } static uint32_t RandXor(){ static uint32_t x=123456789; static uint32_t y=362436069; static uint32_t z=521288629; static uint32_t w=88675123; uint32_t t; t=x^(x<<11); x=y; y=z; z=w; return w=(w^(w>>19))^(t^(t>>8)); } static long double Rand01(){ return (RandXor()+0.5)*(1.0/UINT_MAX); } template <typename T = int> struct Edge{ int from, to; T cost; int idx; Edge() = default; Edge(int from, int to, T cost = 1, int idx = -1) : from(from), to(to), cost(cost), idx(idx) {} operator int() const { return to; } }; template <typename T = int> struct Graph{ vector<vector<Edge<T>>> g; int es; Graph() = default; explicit Graph(int n) : g(n), es(0) {} size_t size() const{ return g.size(); } void add_directed_edge(int from, int to, T cost = 1){ g[from].emplace_back(from, to, cost, es++); } void add_edge(int from, int to, T cost = 1){ g[from].emplace_back(from, to, cost, es); g[to].emplace_back(to, from, cost, es++); } void read(int M, int padding = -1, bool weighted = false, bool directed = false){ for (int i = 0; i < M; i++){ int a, b; cin >> a >> b; a += padding; b += padding; T c = T(1); if (weighted) cin >> c; if (directed) add_directed_edge(a, b, c); else add_edge(a, b, c); } } inline vector<Edge<T>> &operator[](const int &k){ return g[k]; } inline const vector<Edge<T>> &operator[](const int &k) const{ return g[k]; } }; template <typename T = int> using Edges = vector<Edge<T>>; template<typename T> vector<int> bridge_tree_decomposition(Graph<T> &G){ int N=(int)G.g.size(); vector<bool> visited(N); vector<int> ord(N),low(N),cmp(N,-1); int ts=0,idx=0; auto dfs=[&](auto &&self,int v,int p=-1)->void{ visited[v]=true; ord[v]=ts; low[v]=ord[v]; ts++; bool flg=false; for(auto nv:G[v]){ if(!visited[nv]){ self(self,nv,v); low[v]=min(low[v],low[nv]); } else if(nv!=p){ low[v]=min(low[v],ord[nv]); } else{ if(!flg) flg=true; else low[v]=min(low[v],ord[p]); } } }; auto dfs2=[&](auto &&self,int v)->void{ for(auto nv:G[v]){ if(cmp[nv]!=-1) continue; if(low[nv]<=ord[v]) cmp[nv]=cmp[v]; else{ cmp[nv]=idx; idx++; } self(self,nv); } }; for(int i=0;i<N;i++) if(!visited[i]) dfs(dfs,i); for(int i=0;i<N;i++){ if(cmp[i]==-1){ cmp[i]=idx; idx++; dfs2(dfs2,i); } } return cmp; } void solve(){ int N; cin>>N; vi A(N),B(N); Graph<int> G(N); rep(i,N){ cin>>A[i]>>B[i]; A[i]--; B[i]--; G.add_edge(A[i],B[i]); } auto ret=bridge_tree_decomposition(G); vi ANS; rep(i,N) if(ret[A[i]]==ret[B[i]]) ANS.emplace_back(i+1); cout<<sz(ANS)<<endl; cout<<ANS<<endl; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); solve(); }