結果
問題 |
No.3111 Toll Optimization
|
ユーザー |
|
提出日時 | 2025-04-19 12:17:43 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 215 ms / 5,000 ms |
コード長 | 3,322 bytes |
コンパイル時間 | 4,091 ms |
コンパイル使用メモリ | 264,180 KB |
実行使用メモリ | 20,288 KB |
最終ジャッジ日時 | 2025-04-19 12:17:56 |
合計ジャッジ時間 | 11,354 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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> #include <atcoder/all> using namespace atcoder; using namespace std; using ll = long long; // -------------------------------------------------------- template <class T> bool chmax(T &a, const T b) { if (a < b) { a = b; return 1; } return 0; } template <class T> bool chmin(T &a, const T b) { if (b < a) { a = b; return 1; } return 0; } #define FOR(i, l, r) for (ll i = (l); i < (r); ++i) #define RFOR(i, l, r) for (ll i = (r) - 1; (l) <= i; --i) #define REP(i, n) FOR(i, 0, n) #define RREP(i, n) RFOR(i, 0, n) #define ALL(c) (c).begin(), (c).end() #define RALL(c) (c).rbegin(), (c).rend() #define SORT(c) sort(ALL(c)) #define RSORT(c) sort(RALL(c)) #define MIN(c) *min_element(ALL(c)) #define MAX(c) *max_element(ALL(c)) #define SUM(c) accumulate(ALL(c), 0LL) #define BITCNT(c) __builtin_popcountll(c) #define SZ(c) ((int)(c).size()) #define COUT(c) cout << (c) << '\n' #define debug(x) cerr << #x << " = " << (x) << '\n'; using P = pair<ll, ll>; using VP = vector<P>; using VVP = vector<VP>; using VS = vector<string>; using VI = vector<int>; using VVI = vector<VI>; using VLL = vector<ll>; using VVLL = vector<VLL>; using VB = vector<bool>; using VVB = vector<VB>; using VD = vector<double>; using VVD = vector<VD>; static const double EPS = 1e-10; static const double PI = acos(-1.0); template <typename T> void arrPrint(vector<T> arr) { for (auto v : arr) cout << v << " "; cout << '\n'; } template <typename T> void arrPrint2Dim(vector<vector<T>> arr) { for (auto a : arr) arrPrint(a); } template <typename T, typename T2> void arrPrintPair(vector<pair<T, T2>> arr) { for (auto v : arr) cout << "{" << v.first << "," << v.second << "}, "; cout << '\n'; } const int dx[4] = {1, 0, -1, 0}; const int dy[4] = {0, 1, 0, -1}; ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; } ll lcm(ll a, ll b) { return a / gcd(a, b) * b; } // static const int INF = (1 << 30) - 1; // 1073741824 - 1 static const ll INF = (1LL << 62) - 1; // 4611686018427387904 - 1 // static const ll MOD = 1000000007; static const ll MOD = 998244353; using mint = static_modint<MOD>; using VM = vector<mint>; using VVM = vector<VM>; ostream &operator<<(std::ostream &os, const mint &n) { return os << n.val(); } ll llceil(ll a, ll b) { return (a + b - 1) / b; } using T = tuple<ll, ll, ll>; int main() { cin.tie(0); ios::sync_with_stdio(false); ll N, M, K; cin >> N >> M >> K; VLL Cost(M); VVP to(N); REP(i, M) cin >> Cost[i]; REP(i, M) { ll u, v; cin >> u >> v; --u, --v; to[u].push_back({v, Cost[i]}); to[v].push_back({u, Cost[i]}); } VVLL dist(N, VLL(K + 1, INF)); priority_queue<T, vector<T>, greater<T>> que; dist[0][0] = 0; que.push({0, 0, 0}); while (!que.empty()) { auto [d, v, useCount] = que.top(); que.pop(); if (dist[v][useCount] < d) continue; for (auto [nv, c] : to[v]) { // クーポンを利用する if (useCount < K && chmin(dist[nv][useCount + 1], d)) { que.push({dist[nv][useCount + 1], nv, useCount + 1}); } // クーポンを利用しない if (chmin(dist[nv][useCount], d + c)) { que.push({dist[nv][useCount], nv, useCount}); } } } ll ans = INF; REP(k, K + 1) chmin(ans, dist[N - 1][k]); if (ans == INF) ans = -1; COUT(ans); }