結果
問題 | No.2780 The Bottle Imp |
ユーザー | tokusakurai |
提出日時 | 2024-06-07 21:45:49 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 52 ms / 2,000 ms |
コード長 | 8,386 bytes |
コンパイル時間 | 3,089 ms |
コンパイル使用メモリ | 217,884 KB |
実行使用メモリ | 31,104 KB |
最終ジャッジ日時 | 2024-06-08 10:28:38 |
合計ジャッジ時間 | 4,580 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 1 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 30 ms
11,264 KB |
testcase_08 | AC | 27 ms
11,264 KB |
testcase_09 | AC | 28 ms
11,264 KB |
testcase_10 | AC | 28 ms
11,264 KB |
testcase_11 | AC | 29 ms
11,136 KB |
testcase_12 | AC | 52 ms
17,920 KB |
testcase_13 | AC | 49 ms
18,048 KB |
testcase_14 | AC | 17 ms
6,528 KB |
testcase_15 | AC | 17 ms
6,656 KB |
testcase_16 | AC | 16 ms
6,784 KB |
testcase_17 | AC | 16 ms
6,656 KB |
testcase_18 | AC | 16 ms
6,656 KB |
testcase_19 | AC | 16 ms
6,656 KB |
testcase_20 | AC | 15 ms
6,656 KB |
testcase_21 | AC | 15 ms
6,656 KB |
testcase_22 | AC | 12 ms
6,272 KB |
testcase_23 | AC | 15 ms
6,656 KB |
testcase_24 | AC | 24 ms
9,984 KB |
testcase_25 | AC | 37 ms
14,336 KB |
testcase_26 | AC | 21 ms
8,960 KB |
testcase_27 | AC | 15 ms
8,860 KB |
testcase_28 | AC | 16 ms
8,868 KB |
testcase_29 | AC | 19 ms
11,516 KB |
testcase_30 | AC | 16 ms
10,496 KB |
testcase_31 | AC | 28 ms
14,976 KB |
testcase_32 | AC | 9 ms
5,376 KB |
testcase_33 | AC | 40 ms
25,344 KB |
testcase_34 | AC | 48 ms
31,104 KB |
testcase_35 | AC | 8 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 8 ms
5,376 KB |
testcase_39 | AC | 28 ms
15,392 KB |
testcase_40 | AC | 27 ms
15,392 KB |
testcase_41 | AC | 27 ms
15,264 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 1 ms
5,376 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 per(i, n) for (int i = (n) - 1; i >= 0; i--) #define rep2(i, l, r) for (int i = (l); i < (r); i++) #define per2(i, l, r) for (int i = (r) - 1; i >= (l); i--) #define each(e, v) for (auto &e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #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>; template <typename T> using minheap = priority_queue<T, vector<T>, greater<T>>; template <typename T> using maxheap = priority_queue<T>; 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; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } int pct(int x) { return __builtin_popcount(x); } int pct(ll x) { return __builtin_popcountll(x); } int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } int botbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int botbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> void err_print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cerr << v[i] + x << ' '; cerr << endl; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template <typename T> void reorder(vector<T> &a, const vector<int> &ord) { int n = a.size(); vector<T> b(n); for (int i = 0; i < n; i++) b[i] = a[ord[i]]; swap(a, b); } template <typename T> T floor(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0 ? x / y : (x - y + 1) / y); } template <typename T> T ceil(T x, T y) { assert(y != 0); if (y < 0) x = -x, y = -y; return (x >= 0 ? (x + y - 1) / y : x / y); } template <typename S, typename T> pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first + q.first, p.second + q.second); } template <typename S, typename T> pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first - q.first, p.second - q.second); } template <typename S, typename T> istream &operator>>(istream &is, pair<S, T> &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template <typename S, typename T> ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << p.first << ' ' << p.second; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); cerr << fixed << setprecision(15); } } io_setup; constexpr int inf = (1 << 30) - 1; constexpr ll INF = (1LL << 60) - 1; // constexpr int MOD = 1000000007; constexpr int MOD = 998244353; struct Union_Find_Tree { vector<int> data; const int n; int cnt; Union_Find_Tree(int n) : data(n, -1), n(n), cnt(n) {} int root(int x) { if (data[x] < 0) return x; return data[x] = root(data[x]); } int operator[](int i) { return root(i); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; if (data[x] > data[y]) swap(x, y); data[x] += data[y], data[y] = x; cnt--; return true; } int size(int x) { return -data[root(x)]; } int count() { return cnt; }; bool same(int x, int y) { return root(x) == root(y); } void clear() { cnt = n; fill(begin(data), end(data), -1); } }; template <bool directed = false> struct Graph { struct edge { int to, id; edge(int to, int id) : to(to), id(id) {} }; vector<vector<edge>> es; const int n; int m; Graph(int n) : es(n), n(n), m(0) {} void add_edge(int from, int to) { es[from].emplace_back(to, m); if (!directed) es[to].emplace_back(from, m); m++; } }; struct Strongly_Connected_Components { struct edge { int to, id; edge(int to, int id) : to(to), id(id) {} }; vector<vector<edge>> es; vector<int> st; vector<int> ord, low, comp; const int n; int m; Strongly_Connected_Components(int n) : es(n), ord(n), low(n), comp(n), n(n), m(0) { st.reserve(n); } void add_edge(int from, int to) { es[from].emplace_back(to, m); m++; } void _dfs(int now, int &cnt_ord, int &cnt_group) { ord[now] = low[now] = cnt_ord++; st.push_back(now); for (auto &e : es[now]) { if (ord[e.to] == -1) { _dfs(e.to, cnt_ord, cnt_group); low[now] = min(low[now], low[e.to]); } else { low[now] = min(low[now], ord[e.to]); } } if (low[now] == ord[now]) { while (true) { int v = st.back(); st.pop_back(); ord[v] = n; comp[v] = cnt_group; if (v == now) break; } cnt_group++; } } int decompose() { fill(begin(ord), end(ord), -1); int cnt_ord = 0, cnt_group = 0; for (int i = 0; i < n; i++) { if (ord[i] == -1) _dfs(i, cnt_ord, cnt_group); } for (int i = 0; i < n; i++) comp[i] = cnt_group - 1 - comp[i]; return cnt_group; } Graph<true> make_graph() { Graph<true> G(decompose()); for (int i = 0; i < n; i++) { for (auto &e : es[i]) { int u = comp[i], v = comp[e.to]; if (u != v) G.add_edge(u, v); } } return G; } int operator[](int k) const { return comp[k]; } }; void solve() { int N; cin >> N; Union_Find_Tree uf(N); vector<vector<int>> es(N); Strongly_Connected_Components G(N); rep(i, N) { int K; cin >> K; rep(j, K) { int x; cin >> x; x--; uf.unite(i, x); es[i].eb(x); G.add_edge(i, x); } } // cout << (uf.count() == 1? "Yes\n" : "No\n"); auto G2 = G.make_graph(); if (G[0] != 0) { cout << "No\n"; return; } N = G2.n; rep(i, N - 1) { bool f = false; each(e, G2.es[i]) { if (e.to == i + 1) f = true; } if (!f) { cout << "No\n"; return; } } cout << "Yes\n"; // int S = 0; // rep(i, N) { // if (sz(G2.es[i]) >= 2) { // cout << "No\n"; // return; // } // S += sz(G2.es[i]); // } // cout << (S == N - 1 ? "Yes\n" : "No\n"); // vector<int> ok(N, 0); // ok[0] = 1; // queue<int> que; // que.emplace(0); // while (!empty(que)) { // int i = que.front(); // que.pop(); // each(e, G2.es[i]) { // if (!ok[e.to]) { // ok[e.to] = 1; // que.emplace(e.to); // } // } // } // int S = accumulate(all(ok), 0); // cout << (S == N ? "Yes\n" : "No\n"); } int main() { int T = 1; // cin >> T; while (T--) solve(); }