結果
問題 | No.1477 Lamps on Graph |
ユーザー | keijak |
提出日時 | 2021-04-17 00:01:07 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 83 ms / 2,000 ms |
コード長 | 3,531 bytes |
コンパイル時間 | 2,569 ms |
コンパイル使用メモリ | 206,264 KB |
最終ジャッジ日時 | 2025-01-20 20:50:37 |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 38 |
ソースコード
#include <bits/stdc++.h> #define REP_(i, a_, b_, a, b, ...) \ for (int i = (a), END_##i = (b); i < END_##i; ++i) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define ALL(x) std::begin(x), std::end(x) using i64 = long long; using u64 = unsigned long long; template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b and ((a = std::move(b)), true); } template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b and ((a = std::move(b)), true); } template <typename T> inline int ssize(const T &a) { return (int)std::size(a); } template <typename T> std::istream &operator>>(std::istream &is, std::vector<T> &a) { for (auto &x : a) is >> x; return is; } template <typename Container> std::ostream &print_seq(const Container &a, std::string_view sep = " ", std::string_view ends = "\n", std::ostream &os = std::cout) { auto b = std::begin(a), e = std::end(a); for (auto it = std::begin(a); it != e; ++it) { if (it != b) os << sep; os << *it; } return os << ends; } template <typename T, typename = void> struct is_iterable : std::false_type {}; template <typename T> struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())), decltype(std::end(std::declval<T>()))>> : std::true_type {}; template <typename T, typename = std::enable_if_t< is_iterable<T>::value && !std::is_same<T, std::string_view>::value && !std::is_same<T, std::string>::value>> std::ostream &operator<<(std::ostream &os, const T &a) { return print_seq(a, ", ", "", (os << "{")) << "}"; } template <typename T, typename U> std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &a) { return os << "(" << a.first << ", " << a.second << ")"; } #ifdef ENABLE_DEBUG template <typename T> void pdebug(const T &value) { std::cerr << value; } template <typename T, typename... Ts> void pdebug(const T &value, const Ts &...args) { pdebug(value); std::cerr << ", "; pdebug(args...); } #define DEBUG(...) \ do { \ std::cerr << " \033[33m (L" << __LINE__ << ") "; \ std::cerr << #__VA_ARGS__ << ":\033[0m "; \ pdebug(__VA_ARGS__); \ std::cerr << std::endl; \ } while (0) #else #define pdebug(...) #define DEBUG(...) #endif using namespace std; optional<vector<int>> solve() { int n, m; cin >> n >> m; vector<int> a(n); cin >> a; vector<vector<int>> g(n); deque<bool> on(n, false); REP(i, m) { int u, v; cin >> u >> v; --u, --v; g[u].push_back(v); g[v].push_back(u); } int k; cin >> k; REP(i, k) { int b; cin >> b; --b; on[b] = true; } vector<int> idx(n); REP(i, n) idx[i] = i; sort(ALL(idx), [&](int i, int j) { return a[i] < a[j]; }); vector<int> ans; REP(i, n) { int v = idx[i]; if (not on[v]) continue; ans.push_back(v + 1); on[v] = false; for (auto u : g[v]) { if (a[u] <= a[v]) continue; on[u] = not on[u]; } } REP(v, n) { if (on[v]) return nullopt; } return ans; } int main() { ios_base::sync_with_stdio(false), cin.tie(nullptr); auto res = solve(); if (!res) { cout << "-1\n"; } else { cout << res->size() << "\n"; for (auto x : *res) { cout << x << "\n"; } } }