結果

問題 No.899 γatheree
ユーザー ngtkanangtkana
提出日時 2019-10-04 21:54:08
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 4,425 bytes
コンパイル時間 2,443 ms
コンパイル使用メモリ 203,696 KB
実行使用メモリ 10,620 KB
最終ジャッジ日時 2024-04-14 10:35:14
合計ジャッジ時間 13,619 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge1
このコードへのチャレンジ
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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 WA -
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
権限があれば一括ダウンロードができます

ソースコード

diff # 

#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

class union_find {
    int n;
    std::vector<int> prt;

  public:
    union_find (int n) : n(n), prt(n, -1){}

    bool is_root (int x)        const {return prt.at(x) < 0;}
    int  size    (int x)        const {return -prt.at(find(x));}
    bool same(int x, int y)     const {return find(x) == find(y);}
    int  find    (int x)        const {
      while (!is_root(x)) x = prt.at(x);
      return x;
    }
    // Returns `true` if x and y are newly connected.
    // The smaller one x becomes a child of the larger one y.
    bool unite   (int x, int y) {
      if ((x = find(x)) == (y = find(y))) return false;
      if (size(x) > size(y)) std::swap(x, y);
      prt.at(y) += prt.at(x);
      prt.at(x) = y;
      return true;
    }
};

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 uf = union_find(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 > sat(n, false);
  int q; std::cin >> q;
  loop(q) {
    int x; std::cin >> x;
    lint ret = 0;
    fix ([&](auto dfs, int crr, int prv, int d) -> void {
      ret += std::exchange(a.at(uf.find(crr)), 0);
      uf.unite(x, crr);
      if (d == 0 || (d == 1 && !sat.at(crr))) {
        sat.at(crr) = true;
        for (auto const& nxt : graph.at(crr)) {
          if (nxt == prv || sat.at(nxt)) continue;
          dfs(nxt, crr, d + 1);
        }
      }
    })(x, x, 0);
    a.at(uf.find(x)) = ret;
    sat.at(x) = true;
    std::cout << ret << std::endl;
  }
  return 0;
}
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