結果
問題 | No.1038 TreeAddQuery |
ユーザー |
![]() |
提出日時 | 2020-03-02 20:49:35 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 5,610 bytes |
コンパイル時間 | 3,116 ms |
コンパイル使用メモリ | 227,656 KB |
最終ジャッジ日時 | 2025-01-09 03:58:08 |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 21 TLE * 3 |
ソースコード
#include <bits/stdc++.h>using namespace std;using int64 = long long;const int mod = 1e9 + 7;const int64 infll = (1LL << 58) - 1;const int inf = (1 << 30) - 1;struct IoSetup {IoSetup() {cin.tie(nullptr);ios::sync_with_stdio(false);cout << fixed << setprecision(10);cerr << fixed << setprecision(10);}} iosetup;template< typename T1, typename T2 >ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {os << p.first << " " << p.second;return os;}template< typename T1, typename T2 >istream &operator>>(istream &is, pair< T1, T2 > &p) {is >> p.first >> p.second;return is;}template< typename T >ostream &operator<<(ostream &os, const vector< T > &v) {for(int i = 0; i < (int) v.size(); i++) {os << v[i] << (i + 1 != v.size() ? " " : "");}return os;}template< typename T >istream &operator>>(istream &is, vector< T > &v) {for(T &in : v) is >> in;return is;}template< typename T1, typename T2 >inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }template< typename T1, typename T2 >inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }template< typename T = int64 >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< typename F >struct FixPoint : F {FixPoint(F &&f) : F(forward< F >(f)) {}template< typename... Args >decltype(auto) operator()(Args &&... args) const {return F::operator()(*this, forward< Args >(args)...);}};template< typename F >inline decltype(auto) MFP(F &&f) {return FixPoint< F >{forward< F >(f)};}template< typename T >struct edge {int src, to;T cost;edge(int to, T cost) : src(-1), to(to), cost(cost) {}edge(int src, int to, T cost) : src(src), to(to), cost(cost) {}edge &operator=(const int &x) {to = x;return *this;}operator int() const { return to; }};template< typename T >using Edges = vector< edge< T > >;template< typename T >using WeightedGraph = vector< Edges< T > >;using UnWeightedGraph = vector< vector< int > >;template< typename T >using Matrix = vector< vector< T > >;template< typename G >struct CentroidDecomposition {const G &g;vector< int > sub;vector< bool > v;CentroidDecomposition(const G &g) : g(g), sub(g.size()), v(g.size()) {}inline int build_dfs(int idx, int par) {sub[idx] = 1;for(auto &to : g[idx]) {if(to == par || v[to]) continue;sub[idx] += build_dfs(to, idx);}return sub[idx];}inline int search_centroid(int idx, int par, const int mid) {for(auto &to : g[idx]) {if(to == par || v[to]) continue;if(sub[to] > mid) return search_centroid(to, idx, mid);}return idx;}inline int build(UnWeightedGraph &t, int idx) {int centroid = search_centroid(idx, -1, build_dfs(idx, -1) / 2);v[centroid] = true;for(auto &to : g[centroid]) {if(!v[to]) t[centroid].emplace_back(build(t, to));}v[centroid] = false;return centroid;}inline int build(UnWeightedGraph &t) {t.resize(g.size());return build(t, 0);}};int main() {int N, Q;cin >> N >> Q;UnWeightedGraph g(N);for(int i = 1; i < N; i++) {int a, b;cin >> a >> b;--a, --b;g[a].emplace_back(b);g[b].emplace_back(a);}CentroidDecomposition< UnWeightedGraph > cd(g);UnWeightedGraph t;vector< int > used(N);vector< int > depth(N);vector< vector< int > > subdepth(N);vector< vector< tuple< int, int, int > > > belong(N);vector< vector< int64 > > bit(N);vector< vector< vector< int64 > > > subbit(N);MFP([&](auto rec, int centroid) -> void {used[centroid] = true;queue< tuple< int, int, int, int > > que;int par_id = 0;belong[centroid].emplace_back(centroid, 0, -1);for(auto &to : g[centroid]) {if(!used[to]) que.emplace(to, centroid, par_id++, 1);}subdepth[centroid].assign(par_id, 1);subbit[centroid].resize(par_id);while(!que.empty()) {int idx, p, top, dep;tie(idx, p, top, dep) = que.front();que.pop();chmax(depth[centroid], dep);chmax(subdepth[centroid][top], dep);belong[idx].emplace_back(centroid, dep, top);for(auto &to : g[idx]) {if(used[to] || to == p) continue;que.emplace(to, idx, top, dep + 1);}}bit[centroid].resize(depth[centroid] + 2);for(int i = 0; i < par_id; i++) {subbit[centroid][i].resize(subdepth[centroid][i] + 2);}for(auto &to : t[centroid]) rec(to);used[centroid] = false;})(cd.build(t));while(Q--) {int X, Y, Z;cin >> X >> Y >> Z;--X;int64 ret = 0;for(auto &p : belong[X]) {int centroid, dep, top;tie(centroid, dep, top) = p;ret += bit[centroid][dep];if(top >= 0) {ret += subbit[centroid][top][dep];}int rest_dep = Y - dep;if(rest_dep < 0) continue;for(int k = 0; k <= min(depth[centroid], rest_dep); k++) {bit[centroid][k] += Z;if(top >= 0 && k < subbit[centroid][top].size()) subbit[centroid][top][k] -= Z;}}cout << ret << "\n";}}