結果
問題 | No.399 動的な領主 |
ユーザー | Daylight |
提出日時 | 2023-03-12 15:35:58 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 505 ms / 2,000 ms |
コード長 | 5,112 bytes |
コンパイル時間 | 4,835 ms |
コンパイル使用メモリ | 273,464 KB |
実行使用メモリ | 22,484 KB |
最終ジャッジ日時 | 2024-09-18 07:04:36 |
合計ジャッジ時間 | 9,700 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
(要ログイン)
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
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 3 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 4 ms
6,944 KB |
testcase_05 | AC | 32 ms
6,944 KB |
testcase_06 | AC | 495 ms
17,304 KB |
testcase_07 | AC | 468 ms
17,420 KB |
testcase_08 | AC | 493 ms
17,304 KB |
testcase_09 | AC | 494 ms
17,500 KB |
testcase_10 | AC | 5 ms
6,944 KB |
testcase_11 | AC | 25 ms
6,940 KB |
testcase_12 | AC | 347 ms
17,836 KB |
testcase_13 | AC | 339 ms
17,772 KB |
testcase_14 | AC | 84 ms
22,484 KB |
testcase_15 | AC | 122 ms
22,288 KB |
testcase_16 | AC | 202 ms
19,700 KB |
testcase_17 | AC | 505 ms
17,376 KB |
testcase_18 | AC | 466 ms
17,408 KB |
ソースコード
#include <atcoder/all> #include <bits/stdc++.h> using namespace std; #define SZ(x) (int) (x).size() #define REP(i, n) for(int i = 0; i < (n); i++) #define FOR(i, a, b) for(auto i = (a); i < (b); i++) #define For(i, a, b, c) \ for(auto i = (a); i != (b); i += (c)) #define REPR(i, n) for(auto i = (n) -1; i >= 0; i--) #define ALL(s) (s).begin(), (s).end() #define so(V) sort(ALL(V)) #define rev(V) reverse(ALL(V)) #define uni(v) v.erase(unique(ALL(v)), (v).end()) #define eb emplace_back typedef unsigned long long ull; typedef long long ll; typedef vector<int> vi; typedef vector<ll> vll; typedef vector<bool> vb; typedef vector<vi> vvi; typedef vector<vll> vvll; typedef pair<int, int> PI; typedef pair<ll, ll> PL; const double EPS = 1e-6; const int MOD = 1e9 + 7; const int INF = (1 << 30); const ll LINF = 1e18; const double math_PI = acos(-1); template<typename T> vector<T> make_v(size_t a) { return vector<T>(a); } template<typename T, typename... Ts> auto make_v(size_t a, Ts... ts) { return vector<decltype(make_v<T>(ts...))>( a, make_v<T>(ts...)); } template<typename T, typename V> typename enable_if<is_class<T>::value == 0>::type fill_v( T& t, const V& v) { t = v; } template<typename T, typename V> typename enable_if<is_class<T>::value != 0>::type fill_v( T& t, const V& v) { for(auto& e: t) fill_v(e, v); } template<class T> bool chmax(T& a, const T& b) { if(a < b) { a = b; return true; } return false; } template<class T> bool chmin(T& a, const T& b) { if(a > b) { a = b; return true; } return false; } template<typename S, typename T> istream& operator>>(istream& is, pair<S, T>& p) { cin >> p.first >> p.second; return is; } template<typename T> istream& operator>>(istream& is, vector<T>& vec) { for(T& x: vec) is >> x; return is; } template<typename T> string join(vector<T>& vec, string splitter) { stringstream ss; REP(i, SZ(vec)) { if(i != 0) ss << splitter; ss << vec[i]; } return ss.str(); } template<typename T> ostream& operator<<(ostream& os, vector<T>& vec) { os << join(vec, " "); return os; } class HLdecomposition { private: int V; vector<vector<int>> G; vector<int> stsize, parent, pathtop, in, out; int root; bool built_flag; void BuildStsize(int u, int p) { stsize[u] = 1, parent[u] = p; for(int& v: G[u]) { if(v == p) { if(v == G[u].back()) break; else swap(v, G[u].back()); } BuildStsize(v, u); stsize[u] += stsize[v]; if(stsize[v] > stsize[G[u][0]]) { swap(v, G[u][0]); } } } void BuildPath(int u, int p, int& tm) { in[u] = tm++; for(int v: G[u]) { if(v == p) continue; pathtop[v] = (v == G[u][0] ? pathtop[u] : v); BuildPath(v, u, tm); } out[u] = tm; } public: void add_edge(int u, int v) { G[u].push_back(v), G[v].push_back(u); } void build(int _root = 0) { root = _root; built_flag = true; int tm = 0; BuildStsize(root, -1); pathtop[root] = root; BuildPath(root, -1, tm); } //蜈・・鬆らせ縺ョ繧、繝ウ繝・ャ繧ッ繧ケ縺ョ驟榊・荳翫〒縺ョid繧定ソ斐☆ inline int get(int a) { return in[a]; } int lca(int a, int b) { int pa = pathtop[a], pb = pathtop[b]; while(pathtop[a] != pathtop[b]) { if(in[pa] > in[pb]) { a = parent[pa], pa = pathtop[a]; } else { b = parent[pb], pb = pathtop[b]; } } if(in[a] > in[b]) swap(a, b); return a; } void subtree_query( int a, const function<void(int, int)>& func) { assert( built_flag && "You must call hld.build() before call query function"); func(in[a], out[a]); } // 萓・ hl.path_query(q, r, [&](int l, int r){ seg.range(l, r, s); }) void path_query(int a, int b, const function<void(int, int)>& func) { assert( built_flag && "You must call hld.build() before call query function"); int pa = pathtop[a], pb = pathtop[b]; while(pathtop[a] != pathtop[b]) { if(in[pa] > in[pb]) { func(in[pa], in[a] + 1); a = parent[pa], pa = pathtop[a]; } else { func(in[pb], in[b] + 1); b = parent[pb], pb = pathtop[b]; } } if(in[a] > in[b]) swap(a, b); func(in[a], in[b] + 1); } HLdecomposition(int node_size) : V(node_size), G(V), stsize(V, 0), parent(V, -1), pathtop(V, -1), in(V, -1), out(V, -1), built_flag(false) { } }; using namespace atcoder; struct S { ll value; int size; }; using F = ll; S op(S a, S b) { return { a.value + b.value, a.size + b.size }; } S e() { return { 0, 0 }; } S mapping(F f, S x) { return { x.value + f * x.size, x.size }; } F composition(F f, F g) { return f + g; } F id() { return 0; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int N; cin >> N; HLdecomposition hld(N); REP(i, N - 1) { int u, v; cin >> u >> v; u--; v--; hld.add_edge(u, v); } hld.build(); int Q; cin >> Q; lazy_segtree<S, op, e, F, mapping, composition, id> seg( vector<S>(N, { 1, 1 })); ll ans = 0; REP(q, Q) { int A, B; cin >> A >> B; A--; B--; hld.path_query(A, B, [&](int l, int r) { ans += seg.prod(l, r).value; seg.apply(l, r, 1); }); } cout << ans << endl; return 0; }