結果
問題 | No.1221 木 *= 3 |
ユーザー | ir5 |
提出日時 | 2024-06-23 03:15:56 |
言語 | C++23(gcc13) (gcc 13.2.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,940 bytes |
コンパイル時間 | 4,721 ms |
コンパイル使用メモリ | 149,016 KB |
実行使用メモリ | 36,864 KB |
最終ジャッジ日時 | 2024-06-23 03:16:06 |
合計ジャッジ時間 | 10,085 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(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
10,752 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 3 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | TLE | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
ソースコード
#include <algorithm> #include <cassert> #include <cstdio> #include <cstdlib> #include <cstring> #include <cmath> #include <iostream> #include <numeric> #include <vector> #include <map> #include <set> #include <queue> #include <functional> #include <iomanip> using namespace std; using ll = long long; class range {private: struct I{int x;int operator*(){return x;}bool operator!=(I& lhs){return x<lhs.x;}void operator++(){++x;}};I i,n; public:range(int n_):i({0}),n({n_}){}range(int i_,int n_):i({i_}),n({n_}){}I& begin(){return i;}I& end(){return n;}}; template<typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p){ return os << "{" << p.first << ", " << p.second << "}"; } template<typename T> ostream& operator<<(ostream& os, const vector<T>& obj) { os << "{"; for (const auto& e : obj) os << e << ", "; return os << "}"; } template<typename T> ostream& operator<<(ostream& os, const set<T>& obj) { os << "set{"; for (const auto& e : obj) os << e << ", "; return os << "}"; } template<typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& obj) { os << "map{"; for (const auto& e : obj) os << e << ", "; return os << "}"; } template<typename T> void take(vector<T>& vec, int n) { vec.resize(n); for (int i = 0; i < n; ++i) cin >> vec[i]; } #ifdef ONLINE_JUDGE #define dump(expr) ; #else #define dump(expr) { cerr << "\033[33m#L" << __LINE__ << ": " << expr << "\033[39m" << endl; } #endif using EdgeCost = ll; struct E { int fr, to, eid; EdgeCost cost; E(int fr_, int to_, int eid_, EdgeCost cost_) : fr(fr_), to(to_), eid(eid_), cost(cost_) {} friend ostream &operator<<(ostream &os, const E &e) { os << "(" << e.fr << " -> " << e.to << ")"; return os; } }; using V = vector<E>; struct G { int n, e_count; vector<V> adj; vector<V> rev; G(int n_) : n(n_), e_count(0), adj(n), rev(n) {} void add_directed_edge(int fr, int to, EdgeCost cost = (EdgeCost)1) { int eid = e_count; adj[fr].push_back(E(fr, to, eid, cost)); rev[to].push_back(E(fr, to, eid, cost)); e_count++; } void add_undirected_edge(int fr, int to, EdgeCost cost = (EdgeCost)1) { int eid = e_count; adj[fr].push_back(E(fr, to, eid, cost)); rev[to].push_back(E(fr, to, eid, cost)); adj[to].push_back(E(to, fr, eid, cost)); rev[fr].push_back(E(to, fr, eid, cost)); e_count++; } }; namespace solver { template<typename T1, typename T2> struct In2 { T1 a; T2 b; friend std::istream& operator>>(std::istream& is, In2& obj) { T1 t1; T2 t2; is >> t1 >> t2; obj = {t1, t2}; return is; } }; template<typename T1, typename T2, typename T3> struct In3 { T1 a; T2 b; T3 c; friend std::istream& operator>>(std::istream& is, In3& obj) { T1 t1; T2 t2; T3 t3; is >> t1 >> t2 >> t3; obj = {t1, t2, t3}; return is; } }; int n; vector<ll> as, bs; vector<In2<ll, ll>> vt; void read() { cin >> n; take(as, n); take(bs, n); take(vt, n - 1); } G g(0); ll dp[100010][2]; void dfs(ll x, ll par) { for (int i : range(2)) { for (auto e : g.adj[x]) if (e.to != par) dfs(e.to, x); ll score = 0; if (i == 0) score += as[x - 1]; for (auto e : g.adj[x]) if (e.to != par) { ll best = -1LL << 60; for (int j : range(2)) { ll gain = dp[e.to][j]; if (i && j) gain += bs[x - 1] + bs[e.to - 1]; best = max(best, gain); } score += best; } dp[x][i] = score; } } using RetType = ll; RetType run() { g = G(n + 1); for (auto p : vt) g.add_undirected_edge(p.a, p.b); dfs(1, -1); return max(dp[1][0], dp[1][1]); } } // namespace template <typename F> void run(F f) { if constexpr (std::is_same_v<decltype(f()), void>) f(); else cout << f() << endl; } int main(int argc, char** argv) { cerr << fixed << setprecision(12); cout << fixed << setprecision(12); int testcase = 1; if (argc > 1) testcase = atoi(argv[1]); while (testcase--) { solver::read(); } run(solver::run); }