結果
問題 | No.1983 [Cherry 4th Tune C] 南の島のマーメイド |
ユーザー | tokusakurai |
提出日時 | 2022-06-17 22:27:14 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 231 ms / 4,000 ms |
コード長 | 5,335 bytes |
コンパイル時間 | 2,576 ms |
コンパイル使用メモリ | 216,600 KB |
実行使用メモリ | 41,684 KB |
最終ジャッジ日時 | 2024-10-09 08:38:10 |
合計ジャッジ時間 | 9,510 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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
5,248 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 | 4 ms
5,248 KB |
testcase_09 | AC | 5 ms
5,248 KB |
testcase_10 | AC | 8 ms
5,248 KB |
testcase_11 | AC | 8 ms
5,248 KB |
testcase_12 | AC | 4 ms
5,248 KB |
testcase_13 | AC | 97 ms
12,812 KB |
testcase_14 | AC | 130 ms
15,820 KB |
testcase_15 | AC | 132 ms
15,392 KB |
testcase_16 | AC | 48 ms
10,976 KB |
testcase_17 | AC | 140 ms
17,280 KB |
testcase_18 | AC | 116 ms
15,536 KB |
testcase_19 | AC | 174 ms
21,320 KB |
testcase_20 | AC | 115 ms
14,784 KB |
testcase_21 | AC | 138 ms
17,428 KB |
testcase_22 | AC | 171 ms
21,632 KB |
testcase_23 | AC | 222 ms
24,348 KB |
testcase_24 | AC | 225 ms
24,068 KB |
testcase_25 | AC | 231 ms
24,004 KB |
testcase_26 | AC | 231 ms
23,972 KB |
testcase_27 | AC | 226 ms
23,960 KB |
testcase_28 | AC | 224 ms
24,068 KB |
testcase_29 | AC | 231 ms
24,120 KB |
testcase_30 | AC | 229 ms
24,076 KB |
testcase_31 | AC | 230 ms
24,076 KB |
testcase_32 | AC | 225 ms
23,940 KB |
testcase_33 | AC | 2 ms
5,248 KB |
testcase_34 | AC | 53 ms
10,352 KB |
testcase_35 | AC | 134 ms
38,400 KB |
testcase_36 | AC | 111 ms
16,568 KB |
testcase_37 | AC | 2 ms
5,248 KB |
testcase_38 | AC | 31 ms
5,248 KB |
testcase_39 | AC | 136 ms
41,684 KB |
testcase_40 | AC | 113 ms
22,004 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 each(e, v) for (auto &e : v) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #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> 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; } 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> 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 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); } } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; const int MOD = 1000000007; // const int MOD = 998244353; vector<pii> ps; 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 Low_Link { struct edge { int to, id; edge(int to, int id) : to(to), id(id) {} }; vector<vector<edge>> es; vector<int> ord, low; vector<bool> used; vector<int> articulation, bridge; const int n; int m; Low_Link(int n) : es(n), ord(n), low(n), used(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++; } int _dfs(int now, int pre, int k) { used[now] = true; ord[now] = low[now] = k++; bool is_articulation = false; int cnt = 0; for (auto &e : es[now]) { if (e.id == pre) continue; if (!used[e.to]) { cnt++; k = _dfs(e.to, e.id, k); low[now] = min(low[now], low[e.to]); if (pre != -1 && low[e.to] >= ord[now]) is_articulation = true; if (ord[now] < low[e.to]) bridge.push_back(e.id), ps.eb(now, e.to); } else { low[now] = min(low[now], ord[e.to]); } } if (pre == -1 && cnt >= 2) is_articulation = true; if (is_articulation) articulation.push_back(now); return k; } void build() { fill(begin(used), end(used), false); int k = 0; for (int i = 0; i < n; i++) { if (!used[i]) k = _dfs(i, -1, k); } } }; int main() { int N, M, Q; cin >> N >> M >> Q; Low_Link G(N); rep(i, M) { int u, v; cin >> u >> v; u--, v--; G.add_edge(u, v); } G.build(); Union_Find_Tree uf(N); each(e, ps) uf.unite(e.first, e.second); while (Q--) { int u, v; cin >> u >> v; u--, v--; cout << (uf.same(u, v) ? "Yes\n" : "No\n"); } }