結果
問題 | No.1002 Twotone |
ユーザー | ei1333333 |
提出日時 | 2020-02-28 23:44:56 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,151 ms / 5,000 ms |
コード長 | 5,666 bytes |
コンパイル時間 | 3,161 ms |
コンパイル使用メモリ | 231,392 KB |
実行使用メモリ | 55,552 KB |
最終ジャッジ日時 | 2024-10-13 19:23:24 |
合計ジャッジ時間 | 17,685 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(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
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 320 ms
23,936 KB |
testcase_04 | AC | 442 ms
30,208 KB |
testcase_05 | AC | 443 ms
30,208 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 238 ms
19,584 KB |
testcase_08 | AC | 429 ms
30,208 KB |
testcase_09 | AC | 428 ms
30,208 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 538 ms
25,088 KB |
testcase_12 | AC | 780 ms
31,488 KB |
testcase_13 | AC | 791 ms
31,616 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 344 ms
19,456 KB |
testcase_16 | AC | 847 ms
31,232 KB |
testcase_17 | AC | 713 ms
31,232 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 563 ms
28,800 KB |
testcase_20 | AC | 672 ms
36,096 KB |
testcase_21 | AC | 673 ms
35,712 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 563 ms
29,696 KB |
testcase_24 | AC | 1,151 ms
46,464 KB |
testcase_25 | AC | 1,144 ms
46,336 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 81 ms
20,352 KB |
testcase_28 | AC | 152 ms
28,344 KB |
testcase_29 | AC | 125 ms
28,344 KB |
testcase_30 | AC | 2 ms
5,248 KB |
testcase_31 | AC | 121 ms
28,328 KB |
testcase_32 | AC | 153 ms
28,348 KB |
testcase_33 | AC | 122 ms
28,348 KB |
testcase_34 | AC | 936 ms
55,552 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< typename G > struct CentroidDecomposition { const G &g; vector< int > sub; vector< vector< int > > belong; vector< bool > v; CentroidDecomposition(const G &g) : g(g), sub(g.size()), v(g.size()), belong(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 void belong_dfs(int idx, int par, int centroid) { belong[idx].emplace_back(centroid); for(auto &to : g[idx]) { if(to == par || v[to]) continue; belong_dfs(to, idx, centroid); } } inline int build(UnWeightedGraph &t, int idx) { int centroid = search_centroid(idx, -1, build_dfs(idx, -1) / 2); v[centroid] = true; // belong_dfs(centroid, -1, centroid); 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, K; cin >> N >> K; WeightedGraph< int > g(N); for(int i = 1; i < N; i++) { int a, b, c; cin >> a >> b >> c; --a, --b; g[a].emplace_back(b, c); g[b].emplace_back(a, c); } auto cpd = CentroidDecomposition< WeightedGraph< int > >(g); UnWeightedGraph t; int root = cpd.build(t); int64 ret = 0; vector< int > used(N); map< pair< int, int >, int > mp; int all; map< int, int > mp2; map< int, int > mp3; auto get_vec = MFP([&](auto get_vec, int idx, int par, int a, int b) -> void { if(b == -1) { ret += all - mp2[a]; ret += mp3[a]; } else { ret++; ret += mp2[a] + mp2[b]; ret += mp[minmax(a, b)]; } for(auto &e : g[idx]) { if(e.to == par) continue; if(used[e.to]) continue; if(a == e.cost) { get_vec(e.to, idx, e.cost, b); } else if(b == -1 || b == e.cost) { get_vec(e.to, idx, a, e.cost); } } }); auto add_vec = MFP([&](auto add_vec, int idx, int par, int a, int b) -> void { if(b == -1) { mp2[a]++; all++; } else { mp[minmax(a, b)]++; mp3[a]++; mp3[b]++; } for(auto &e : g[idx]) { if(e.to == par) continue; if(used[e.to]) continue; if(a == e.cost) { add_vec(e.to, idx, e.cost, b); } else if(b == -1 || b == e.cost) { add_vec(e.to, idx, a, e.cost); } } }); auto rec = MFP([&](auto rec, int idx) -> void { used[idx] = true; mp.clear(); mp2.clear(); mp3.clear(); all = 0; for(auto &e : g[idx]) { if(used[e.to]) continue; get_vec(e.to, idx, e.cost, -1); add_vec(e.to, idx, e.cost, -1); } for(auto &to : t[idx]) { rec(to); } used[idx] = false; }); rec(root); cout << ret << endl; }