結果
問題 | No.1254 補強への架け橋 |
ユーザー | stoq |
提出日時 | 2020-10-14 04:36:53 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 84 ms / 2,000 ms |
コード長 | 3,534 bytes |
コンパイル時間 | 2,926 ms |
コンパイル使用メモリ | 218,544 KB |
実行使用メモリ | 9,728 KB |
最終ジャッジ日時 | 2024-07-20 18:59:08 |
合計ジャッジ時間 | 16,197 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | 2 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 | 3 ms
5,376 KB |
testcase_13 | AC | 3 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 3 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 | 3 ms
5,376 KB |
testcase_28 | AC | 2 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 3 ms
5,376 KB |
testcase_31 | AC | 2 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 3 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 3 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 3 ms
5,376 KB |
testcase_42 | AC | 3 ms
5,376 KB |
testcase_43 | AC | 2 ms
5,376 KB |
testcase_44 | AC | 2 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 | 2 ms
5,376 KB |
testcase_49 | AC | 2 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 | 2 ms
5,376 KB |
testcase_56 | AC | 3 ms
5,376 KB |
testcase_57 | AC | 2 ms
5,376 KB |
testcase_58 | AC | 3 ms
5,376 KB |
testcase_59 | AC | 2 ms
5,376 KB |
testcase_60 | AC | 2 ms
5,376 KB |
testcase_61 | AC | 2 ms
5,376 KB |
testcase_62 | AC | 2 ms
5,376 KB |
testcase_63 | AC | 6 ms
5,376 KB |
testcase_64 | AC | 3 ms
5,376 KB |
testcase_65 | AC | 4 ms
5,376 KB |
testcase_66 | AC | 4 ms
5,376 KB |
testcase_67 | AC | 3 ms
5,376 KB |
testcase_68 | AC | 4 ms
5,376 KB |
testcase_69 | AC | 5 ms
5,376 KB |
testcase_70 | AC | 4 ms
5,376 KB |
testcase_71 | AC | 4 ms
5,376 KB |
testcase_72 | AC | 6 ms
5,376 KB |
testcase_73 | AC | 4 ms
5,376 KB |
testcase_74 | AC | 5 ms
5,376 KB |
testcase_75 | AC | 4 ms
5,376 KB |
testcase_76 | AC | 3 ms
5,376 KB |
testcase_77 | AC | 4 ms
5,376 KB |
testcase_78 | AC | 6 ms
5,376 KB |
testcase_79 | AC | 6 ms
5,376 KB |
testcase_80 | AC | 6 ms
5,376 KB |
testcase_81 | AC | 6 ms
5,376 KB |
testcase_82 | AC | 5 ms
5,376 KB |
testcase_83 | AC | 56 ms
9,472 KB |
testcase_84 | AC | 57 ms
9,344 KB |
testcase_85 | AC | 29 ms
7,168 KB |
testcase_86 | AC | 45 ms
8,448 KB |
testcase_87 | AC | 51 ms
8,832 KB |
testcase_88 | AC | 8 ms
5,376 KB |
testcase_89 | AC | 60 ms
9,472 KB |
testcase_90 | AC | 33 ms
7,168 KB |
testcase_91 | AC | 27 ms
6,400 KB |
testcase_92 | AC | 15 ms
5,376 KB |
testcase_93 | AC | 53 ms
8,192 KB |
testcase_94 | AC | 46 ms
7,808 KB |
testcase_95 | AC | 41 ms
7,808 KB |
testcase_96 | AC | 64 ms
9,216 KB |
testcase_97 | AC | 22 ms
5,888 KB |
testcase_98 | AC | 57 ms
9,216 KB |
testcase_99 | AC | 35 ms
6,784 KB |
testcase_100 | AC | 58 ms
9,600 KB |
testcase_101 | AC | 12 ms
5,376 KB |
testcase_102 | AC | 7 ms
5,376 KB |
testcase_103 | AC | 13 ms
5,376 KB |
testcase_104 | AC | 18 ms
5,504 KB |
testcase_105 | AC | 58 ms
8,192 KB |
testcase_106 | AC | 27 ms
6,272 KB |
testcase_107 | AC | 68 ms
9,472 KB |
testcase_108 | AC | 59 ms
9,344 KB |
testcase_109 | AC | 43 ms
8,192 KB |
testcase_110 | AC | 34 ms
7,680 KB |
testcase_111 | AC | 38 ms
8,064 KB |
testcase_112 | AC | 17 ms
5,504 KB |
testcase_113 | AC | 35 ms
7,552 KB |
testcase_114 | AC | 24 ms
6,144 KB |
testcase_115 | AC | 10 ms
5,376 KB |
testcase_116 | AC | 31 ms
6,528 KB |
testcase_117 | AC | 17 ms
5,504 KB |
testcase_118 | AC | 59 ms
9,088 KB |
testcase_119 | AC | 32 ms
6,912 KB |
testcase_120 | AC | 56 ms
8,832 KB |
testcase_121 | AC | 15 ms
5,376 KB |
testcase_122 | AC | 28 ms
6,528 KB |
testcase_123 | AC | 2 ms
5,376 KB |
testcase_124 | AC | 84 ms
9,728 KB |
testcase_125 | AC | 74 ms
9,728 KB |
ソースコード
#define MOD_TYPE 1 #pragma region Macros #include <bits/stdc++.h> using namespace std; #if 0 #include <boost/multiprecision/cpp_int.hpp> #include <boost/multiprecision/cpp_dec_float.hpp> using Int = boost::multiprecision::cpp_int; using lld = boost::multiprecision::cpp_dec_float_100; #endif #if 1 #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #endif using ll = long long int; using ld = long double; using pii = pair<int, int>; using pll = pair<ll, ll>; using pld = pair<ld, ld>; template <typename Q_type> using smaller_queue = priority_queue<Q_type, vector<Q_type>, greater<Q_type>>; constexpr ll MOD = (MOD_TYPE == 1 ? (ll)(1e9 + 7) : 998244353); //constexpr ll MOD = 1; constexpr int INF = (int)1e9 + 10; constexpr ll LINF = (ll)4e18; constexpr double PI = acos(-1.0); constexpr double EPS = 1e-9; constexpr int Dx[] = {0, 0, -1, 1, -1, 1, -1, 1, 0}; constexpr int Dy[] = {1, -1, 0, 0, -1, -1, 1, 1, 0}; #define REP(i, m, n) for (ll i = m; i < (ll)(n); ++i) #define rep(i, n) REP(i, 0, n) #define REPI(i, m, n) for (int i = m; i < (int)(n); ++i) #define repi(i, n) REPI(i, 0, n) #define MP make_pair #define MT make_tuple #define YES(n) cout << ((n) ? "YES" : "NO") << "\n" #define Yes(n) cout << ((n) ? "Yes" : "No") << "\n" #define possible(n) cout << ((n) ? "possible" : "impossible") << "\n" #define Possible(n) cout << ((n) ? "Possible" : "Impossible") << "\n" #define Yay(n) cout << ((n) ? "Yay!" : ":(") << "\n" #define all(v) v.begin(), v.end() #define NP(v) next_permutation(all(v)) #define dbg(x) cerr << #x << ":" << x << "\n"; struct io_init { io_init() { cin.tie(0); ios::sync_with_stdio(false); cout << setprecision(30) << setiosflags(ios::fixed); }; } io_init; template <typename T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } template <typename T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } inline ll CEIL(ll a, ll b) { return (a + b - 1) / b; } template <typename A, size_t N, typename T> inline void Fill(A (&array)[N], const T &val) { fill((T *)array, (T *)(array + N), val); } template <typename T, typename U> constexpr istream &operator>>(istream &is, pair<T, U> &p) noexcept { is >> p.first >> p.second; return is; } template <typename T, typename U> constexpr ostream &operator<<(ostream &os, pair<T, U> &p) noexcept { os << p.first << " " << p.second; return os; } #pragma endregion void solve() { int n; cin >> n; vector<vector<pii>> E(n); vector<int> deg(n, 0); rep(i, n) { int a, b; cin >> a >> b; a--, b--; E[a].push_back({b, i}); E[b].push_back({a, i}); deg[a]++, deg[b]++; } queue<int> que; vector<bool> namori(n, 1); rep(i, n) { if (deg[i] == 1) { namori[i] = 0; que.push(i); } } while (!que.empty()) { int v = que.front(); que.pop(); deg[v]--; for (auto [to, num] : E[v]) { if (!namori[to]) continue; deg[to]--; if (deg[to] == 1) { namori[to] = 0; que.push(to); } } } vector<bool> v(n, 0); rep(i, n) { if (!namori[i]) continue; for (auto [to, num] : E[i]) { if (namori[to]) v[num] = 1; } } vector<int> ans; rep(i, n) { if (v[i]) ans.push_back(i + 1); } cout << ans.size() << "\n"; rep(i, ans.size()) cout << ans[i] << (i + 1 == ans.size() ? "\n" : " "); } int main() { solve(); }