結果
| 問題 |
No.899 γatheree
|
| コンテスト | |
| ユーザー |
ngtkana
|
| 提出日時 | 2019-10-04 22:19:59 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,691 bytes |
| コンパイル時間 | 2,417 ms |
| コンパイル使用メモリ | 201,024 KB |
| 最終ジャッジ日時 | 2025-01-07 20:38:38 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | WA * 20 TLE * 3 |
ソースコード
#include <bits/stdc++.h>
#define loop(n) for (int ngtkana_is_genius = 0; ngtkana_is_genius < int(n); ngtkana_is_genius++)
#define rep(i, begin, end) for(int i = int(begin); i < int(end); i++)
#define all(v) v.begin(), v.end()
#define rand(l, r) std::uniform_int_distribution<>(l, r)(mt)
using lint = long long;
auto cmn = [](auto& a, auto b){if (a > b) {a = b; return true;} return false;};
auto cmx = [](auto& a, auto b){if (a < b) {a = b; return true;} return false;};
void debug_impl() { std::cerr << std::endl; }
template <typename Head, typename... Tail>
void debug_impl(Head head, Tail... tail){
std::cerr << " " << head;
debug_impl(tail...);
}
#ifndef STOPIT
#define debug(...)\
std::cerr << std::boolalpha << "[" << #__VA_ARGS__ << "]:";\
debug_impl(__VA_ARGS__);\
std::cerr << std::noboolalpha;
#else
#define debug 0;
#endif
template <typename T>
auto make_vector_impl(size_t sz, T t) {return std::vector<T>(sz, t);}
template <size_t N, typename T, typename U, std::enable_if_t<N == 1, std::nullptr_t> = nullptr>
auto make_vector(size_t sz, U u) {return make_vector_impl(sz, T(u));}
template <size_t N, typename T, std::enable_if_t<N == 1, std::nullptr_t> = nullptr>
auto make_vector(size_t sz) {return std::vector<T>(sz);}
template <size_t N, typename T, typename... Args, std::enable_if_t<N != 1, std::nullptr_t> = nullptr>
auto make_vector(size_t a, Args... args) {return make_vector_impl(a, make_vector<N - 1, T>(args...));}
template <typename T, typename Size_t>
auto& at(T& t, Size_t i) {return t.at(i);}
template <typename T, typename Size_t, typename... Args>
auto& at(T& t, Size_t i, Args... args) {return at(t.at(i), args...);}
template < typename Container, typename Value = typename Container::value_type, std::enable_if_t<!std::is_same< Container, std::string >::value, std::nullptr_t> = nullptr>
std::istream& operator>> (std::istream& is, Container& v)
{ for (auto & x : v) { is >> x; } return is; }
template < typename Container, typename Value = typename Container::value_type, std::enable_if_t<!std::is_same< Container, std::string >::value, std::nullptr_t> = nullptr >
std::ostream& operator<< (std::ostream& os, Container const& v) {
os << "{";
for (auto it = v.begin(); it != v.end(); it++)
{os << (it != v.begin() ? "," : "") << *it;}
return os << "}";
}
template< typename F >
class fixed_point : F {
public:
explicit constexpr fixed_point (F&& f) noexcept
: F(std::forward< F >(f)) {}
template< typename ... Args >
constexpr decltype(auto) operator()(Args&& ... args) const
{ return F::operator()(*this, std::forward< Args >(args)...); }
};
template< typename F >
static inline constexpr decltype(auto) fix (F&& f) noexcept
{ return fixed_point< F >{std::forward< F >(f)}; }
int main() {
std::cin.tie(0); std::cin.sync_with_stdio(false);
int n; std::cin >> n;
auto graph = make_vector< 2, int >(n, 0);
loop(n - 1) {
int u, v; std::cin >> u >> v;
graph.at(u).emplace_back(v);
graph.at(v).emplace_back(u);
}
std::vector< lint > a(n); std::cin >> a;
std::vector< int > ref(n, -1);
int q; std::cin >> q;
loop(q) {
int x; std::cin >> x;
fix([&](auto dfs, int crr, int prv, int d) -> void {
a.at(x) += std::exchange(a.at(crr), 0);
auto & r = ref.at(crr);
if (d == 1 && r != -1) {
ref.at(r) = x;
if (r != x)
{ a.at(x) += std::exchange(a.at(r), 0); }
return;
}
else if (d <= 1) {
r = x;
for (auto const& nxt : graph.at(crr)) {
if (nxt == prv) continue;
dfs(nxt, crr, d + 1);
}
}
})(x, x, 0);
std::cout << a.at(x) << std::endl;
}
return 0;
}
ngtkana