結果
問題 |
No.3111 Toll Optimization
|
ユーザー |
![]() |
提出日時 | 2025-04-19 11:13:16 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 200 ms / 5,000 ms |
コード長 | 2,859 bytes |
コンパイル時間 | 6,074 ms |
コンパイル使用メモリ | 333,756 KB |
実行使用メモリ | 17,136 KB |
最終ジャッジ日時 | 2025-04-19 11:13:31 |
合計ジャッジ時間 | 13,503 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 70 |
ソースコード
#include <bits/stdc++.h> using namespace std; template<class T> bool chmin(T& a, T b) { return a > b ? a = b, true : false; } template<class T> bool chmax(T& a, T b) { return a < b ? a = b, true : false; } template<typename T> concept Iterable = requires(T t) { std::begin(t); std::end(t); }; template<typename T> requires Iterable<T> && (!is_same_v<T, string>) ostream& operator<<(ostream& os, const T& container) { for (auto& element : container) os << element << ' '; return os; } template<typename R> requires ranges::range<R> && (!is_same_v<decay_t<R>, string>) && (!is_same_v<decay_t<R>, const char*>) ostream& operator<<(ostream& os, R&& range) { for (auto& element : range)os << element << ' '; return os; } template<typename T> requires Iterable<T> && (!is_same_v<T, string>) istream& operator>>(std::istream& is, T& container) { for (auto& e : container)is >> e; return is; } using ll = long long; using ull = unsigned long long; using uint = unsigned int; template<class T = ll> struct Edge { int to; T weight; bool operator==(Edge e) { return this->to == e.to and this->weight == e.weight; } bool operator<(Edge e) { return this->to == e.to ? this->weight < e.weight : this->to < e.to; } }; #ifdef _DEBUG #define SHOW(n) {const auto& _ret = n; cerr << #n << ": " << _ret << endl;} #define MSG(x) cerr << x << endl; #else #define SHOW(n) #define MSG(x) #endif //AtCoder Library #include <atcoder/all> using namespace atcoder; //using mint = modint998244353; using mint = modint1000000007; //using mint1 = dynamic_modint<0>; //using mint = modint; //mint::set_mod(); istream& operator>>(istream& is, mint& x) { ll r; is >> r; x = r; return is; } ostream& operator<<(ostream& os, mint& x) { os << x.val(); return os; } //boost //#include <boost/multiprecision/cpp_int.hpp> //using namespace boost::multiprecision; //using l3 = int128_t; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int n, m, k; cin >> n >> m >> k; vector<ll> c(m); cin >> c; vector<vector<Edge<ll>>> g(n); for (int i = 0; i < m; ++i) { int a, b; cin >> a >> b; --a, --b; g[a].push_back({ b, c[i] }); g[b].push_back({ a, c[i] }); } const ll INF = 1e18; vector<vector<ll>> dp(k + 1, vector<ll>(n, INF)); dp[0][0] = 0; using T = array<ll, 3>; priority_queue<T, vector<T>, greater<T>> que; que.push({ 0, 0, 0 }); // dist, v, k while (not que.empty()) { auto [d, v, cnt] = que.top(); que.pop(); if (d > dp[cnt][v])continue; for (auto [s, w] : g[v]) { if (chmin(dp[cnt][s], dp[cnt][v] + w)) { que.push({ dp[cnt][s], s, cnt }); } if (cnt + 1 <= k and chmin(dp[cnt + 1][s], dp[cnt][v])) { que.push({ dp[cnt + 1][s], s, cnt + 1 }); } } } ll res = INF; for (int i = 0; i <= k; ++i) { chmin(res, dp[i][n - 1]); } if (res == INF)cout << -1 << endl; else cout << res << endl; return 0; }