結果
問題 | No.1254 補強への架け橋 |
ユーザー | tokusakurai |
提出日時 | 2020-11-06 20:32:57 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 266 ms / 2,000 ms |
コード長 | 2,640 bytes |
コンパイル時間 | 2,605 ms |
コンパイル使用メモリ | 217,436 KB |
実行使用メモリ | 20,096 KB |
最終ジャッジ日時 | 2024-07-22 11:54:49 |
合計ジャッジ時間 | 17,059 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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 | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 3 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 3 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 3 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 2 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 3 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 3 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 3 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 3 ms
5,376 KB |
testcase_44 | AC | 3 ms
5,376 KB |
testcase_45 | AC | 2 ms
5,376 KB |
testcase_46 | AC | 3 ms
5,376 KB |
testcase_47 | AC | 2 ms
5,376 KB |
testcase_48 | AC | 3 ms
5,376 KB |
testcase_49 | AC | 3 ms
5,376 KB |
testcase_50 | AC | 3 ms
5,376 KB |
testcase_51 | AC | 3 ms
5,376 KB |
testcase_52 | AC | 3 ms
5,376 KB |
testcase_53 | AC | 3 ms
5,376 KB |
testcase_54 | AC | 3 ms
5,376 KB |
testcase_55 | AC | 3 ms
5,376 KB |
testcase_56 | AC | 2 ms
5,376 KB |
testcase_57 | AC | 3 ms
5,376 KB |
testcase_58 | AC | 2 ms
5,376 KB |
testcase_59 | AC | 2 ms
5,376 KB |
testcase_60 | AC | 3 ms
5,376 KB |
testcase_61 | AC | 2 ms
5,376 KB |
testcase_62 | AC | 3 ms
5,376 KB |
testcase_63 | AC | 12 ms
5,376 KB |
testcase_64 | AC | 4 ms
5,376 KB |
testcase_65 | AC | 9 ms
5,376 KB |
testcase_66 | AC | 8 ms
5,376 KB |
testcase_67 | AC | 4 ms
5,376 KB |
testcase_68 | AC | 8 ms
5,376 KB |
testcase_69 | AC | 9 ms
5,376 KB |
testcase_70 | AC | 5 ms
5,376 KB |
testcase_71 | AC | 5 ms
5,376 KB |
testcase_72 | AC | 10 ms
5,376 KB |
testcase_73 | AC | 5 ms
5,376 KB |
testcase_74 | AC | 9 ms
5,376 KB |
testcase_75 | AC | 8 ms
5,376 KB |
testcase_76 | AC | 4 ms
5,376 KB |
testcase_77 | AC | 8 ms
5,376 KB |
testcase_78 | AC | 11 ms
5,376 KB |
testcase_79 | AC | 11 ms
5,376 KB |
testcase_80 | AC | 10 ms
5,376 KB |
testcase_81 | AC | 11 ms
5,376 KB |
testcase_82 | AC | 11 ms
5,376 KB |
testcase_83 | AC | 177 ms
14,720 KB |
testcase_84 | AC | 165 ms
14,336 KB |
testcase_85 | AC | 88 ms
10,240 KB |
testcase_86 | AC | 136 ms
12,928 KB |
testcase_87 | AC | 150 ms
13,568 KB |
testcase_88 | AC | 18 ms
5,376 KB |
testcase_89 | AC | 172 ms
14,464 KB |
testcase_90 | AC | 95 ms
10,624 KB |
testcase_91 | AC | 71 ms
9,088 KB |
testcase_92 | AC | 33 ms
6,528 KB |
testcase_93 | AC | 122 ms
12,416 KB |
testcase_94 | AC | 115 ms
11,520 KB |
testcase_95 | AC | 118 ms
11,648 KB |
testcase_96 | AC | 168 ms
14,080 KB |
testcase_97 | AC | 62 ms
8,192 KB |
testcase_98 | AC | 159 ms
14,080 KB |
testcase_99 | AC | 88 ms
10,112 KB |
testcase_100 | AC | 175 ms
14,848 KB |
testcase_101 | AC | 30 ms
6,016 KB |
testcase_102 | AC | 15 ms
5,376 KB |
testcase_103 | AC | 35 ms
6,400 KB |
testcase_104 | AC | 47 ms
7,424 KB |
testcase_105 | AC | 127 ms
12,416 KB |
testcase_106 | AC | 68 ms
8,832 KB |
testcase_107 | AC | 180 ms
14,720 KB |
testcase_108 | AC | 165 ms
14,464 KB |
testcase_109 | AC | 126 ms
12,160 KB |
testcase_110 | AC | 107 ms
11,392 KB |
testcase_111 | AC | 123 ms
12,032 KB |
testcase_112 | AC | 46 ms
7,168 KB |
testcase_113 | AC | 112 ms
11,136 KB |
testcase_114 | AC | 68 ms
8,448 KB |
testcase_115 | AC | 20 ms
5,376 KB |
testcase_116 | AC | 81 ms
9,344 KB |
testcase_117 | AC | 61 ms
7,168 KB |
testcase_118 | AC | 159 ms
14,080 KB |
testcase_119 | AC | 88 ms
9,856 KB |
testcase_120 | AC | 155 ms
13,696 KB |
testcase_121 | AC | 38 ms
6,656 KB |
testcase_122 | AC | 75 ms
9,216 KB |
testcase_123 | AC | 2 ms
5,376 KB |
testcase_124 | AC | 266 ms
20,096 KB |
testcase_125 | AC | 254 ms
19,968 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for(int i = 0; i < n; i++) #define rep2(i, x, n) for(int i = x; i <= n; i++) #define rep3(i, x, n) for(int i = x; i >= n; i--) #define elif else if #define sp(x) fixed << setprecision(x) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; const int MOD = 1000000007; //const int MOD = 998244353; const int inf = (1<<30)-1; const ll INF = (1LL<<60)-1; const double pi = acos(-1.0); const double EPS = 1e-10; template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;}; template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;}; //無向グラフでのdfs //計算量 パス検出:O(N+M)、閉路検出:O(N+M) struct Graph{ vector<vector<int>> es; vector<int> used; vector<int> keep; const int n; Graph(int n) : n(n){ es.resize(n), used.resize(n); } void add_edge(int from, int to, bool directed = false){ es[from].eb(to); if(!directed) es[to].eb(from); } bool trace(int now, int t){ used[now] = true; if(now == t) {keep.eb(now); return true;} for(auto &e: es[now]){ if(used[e]) continue; if(trace(e, t)) {keep.eb(now); return true;} } return false; } vector<int> find_path(int s, int t){ keep.clear(), fill(all(used), 0); trace(s, t), reverse(all(keep)); return keep; } int detect(int now, int pre){ if(used[now]++) return 1; for(auto &e: es[now]){ if(e == pre) continue; int k = detect(e, now); if(k == 2) return 2; if(k == 1) {keep.eb(now); return used[now];} } return 0; } vector<int> find_loop(){ keep.clear(), fill(all(used), 0); rep(i, n){ if(used[i]) continue; detect(i, -1); if(!keep.empty()) {reverse(all(keep)); return keep;} } return keep; } }; //https://yukicoder.me/problems/no/1254 int main(){ int N; cin >> N; Graph G(N); map<pii, int> mp; rep(i, N){ int u, v; cin >> u >> v; u--, v--; G.add_edge(u, v); mp[minmax(u, v)] = i; } vector<int> loop = G.find_loop(); int n = sz(loop); cout << n << endl; rep(i, n){ int j = (i+1)%n; cout << mp[minmax(loop[i], loop[j])]+1 << ' '; } cout << endl; }