結果
問題 | No.1038 TreeAddQuery |
ユーザー | ei1333333 |
提出日時 | 2020-03-02 17:41:53 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,298 ms / 4,000 ms |
コード長 | 6,081 bytes |
コンパイル時間 | 3,026 ms |
コンパイル使用メモリ | 239,500 KB |
実行使用メモリ | 84,832 KB |
最終ジャッジ日時 | 2024-05-03 23:07:38 |
合計ジャッジ時間 | 18,870 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 7 ms
6,944 KB |
testcase_04 | AC | 8 ms
6,944 KB |
testcase_05 | AC | 8 ms
6,940 KB |
testcase_06 | AC | 7 ms
6,940 KB |
testcase_07 | AC | 9 ms
6,944 KB |
testcase_08 | AC | 644 ms
55,504 KB |
testcase_09 | AC | 703 ms
57,220 KB |
testcase_10 | AC | 744 ms
57,728 KB |
testcase_11 | AC | 714 ms
57,600 KB |
testcase_12 | AC | 751 ms
57,856 KB |
testcase_13 | AC | 1,298 ms
84,832 KB |
testcase_14 | AC | 1,039 ms
62,700 KB |
testcase_15 | AC | 952 ms
60,288 KB |
testcase_16 | AC | 912 ms
59,648 KB |
testcase_17 | AC | 888 ms
58,880 KB |
testcase_18 | AC | 236 ms
35,896 KB |
testcase_19 | AC | 281 ms
38,796 KB |
testcase_20 | AC | 269 ms
39,168 KB |
testcase_21 | AC | 301 ms
39,296 KB |
testcase_22 | AC | 355 ms
44,288 KB |
testcase_23 | AC | 393 ms
44,772 KB |
testcase_24 | AC | 535 ms
54,872 KB |
testcase_25 | AC | 1,241 ms
84,756 KB |
testcase_26 | AC | 745 ms
60,768 KB |
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< class T > struct BinaryIndexedTree { vector< T > data; BinaryIndexedTree() = default; BinaryIndexedTree(int sz) { data.assign(++sz, 0); } T sum(int k) { T ret = 0; for(++k; k > 0; k -= k & -k) ret += data[k]; return (ret); } void add(int k, T x) { for(++k; k < data.size(); k += k & -k) data[k] += x; } }; 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< BinaryIndexedTree< int64 > > bit(N); vector< vector< BinaryIndexedTree< 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] = BinaryIndexedTree< int64 >(depth[centroid] + 2); for(int i = 0; i < par_id; i++) { subbit[centroid][i] = BinaryIndexedTree< int64 >(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].sum(dep); if(top >= 0) ret += subbit[centroid][top].sum(dep); int rest_dep = Y - dep; if(rest_dep < 0) continue; bit[centroid].add(0, Z); bit[centroid].add(min(depth[centroid], rest_dep) + 1, -Z); if(top >= 0) { subbit[centroid][top].add(1, -Z); subbit[centroid][top].add(min(subdepth[centroid][top], rest_dep) + 1, +Z); } } cout << ret << "\n"; } }