結果
問題 |
No.1320 Two Type Min Cost Cycle
|
ユーザー |
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提出日時 | 2020-12-17 00:13:32 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 656 ms / 2,000 ms |
コード長 | 4,054 bytes |
コンパイル時間 | 2,784 ms |
コンパイル使用メモリ | 210,808 KB |
最終ジャッジ日時 | 2025-01-17 02:08:39 |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 57 |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using pii = pair<int, int>; template <class T> using V = vector<T>; template <class T> using VV = V<V<T>>; #define pb push_back #define eb emplace_back #define mp make_pair #define fi first #define se second #define rep(i, n) rep2(i, 0, n) #define rep2(i, m, n) for (int i = m; i < (n); i++) #define per(i, b) per2(i, 0, b) #define per2(i, a, b) for (int i = int(b) - 1; i >= int(a); i--) #define ALL(c) (c).begin(), (c).end() #define SZ(x) ((int)(x).size()) constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); } template <class T, class U> void chmin(T& t, const U& u) { if (t > u) t = u; } template <class T, class U> void chmax(T& t, const U& u) { if (t < u) t = u; } template <class T, class U> ostream& operator<<(ostream& os, const pair<T, U>& p) { os << "(" << p.first << "," << p.second << ")"; return os; } template <class T> ostream& operator<<(ostream& os, const vector<T>& v) { os << "{"; rep(i, v.size()) { if (i) os << ","; os << v[i]; } os << "}"; return os; } #ifdef LOCAL void debug_out() { cerr << endl; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << " " << H; debug_out(T...); } #define debug(...) \ cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__) #define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif const ll INF = TEN(15); VV<pii> g; int main() { int T, N, M; cin >> T >> N >> M; g.resize(N); if (T == 0) { ll ans = INF; V<pair<pii, int>> es; rep(i, M) { int a, b, w; cin >> a >> b >> w; --a, --b; es.eb(mp(a, b), w); } rep(i, M) { pii pr = es[i].fi; int ct = es[i].se; int s = pr.fi; g.clear(); g = VV<pii>(N); rep(j, M) if (j != i) { g[es[j].fi.fi].eb(es[j].fi.se, es[j].se); g[es[j].fi.se].eb(es[j].fi.fi, es[j].se); } V<ll> d(N, INF); d[s] = 0; using Data = pair<ll, int>; priority_queue<Data, V<Data>, greater<Data>> que; que.emplace(0ll, s); while (!que.empty()) { auto t = que.top(); que.pop(); int v = t.se; if (d[v] < t.fi) continue; for (auto& [to, w] : g[v]) { if (d[to] > d[v] + w) { d[to] = d[v] + w; que.emplace(d[to], to); } } } if (d[pr.se] != INF) { // debug(pr, d[pr.se], ct); chmin(ans, d[pr.se] + ct); } } if (ans == INF) ans = -1; cout << ans << endl; } else { rep(i, M) { int a, b, w; cin >> a >> b >> w; --a, --b; g[a].eb(b, w); } ll ans = INF; rep(s, N) { V<ll> d(N, INF); d[s] = 0; using Data = pair<ll, int>; priority_queue<Data, V<Data>, greater<Data>> que; que.emplace(0ll, s); while (!que.empty()) { auto t = que.top(); que.pop(); int v = t.se; if (d[v] < t.fi) continue; for (auto& [to, w] : g[v]) { if (d[to] > d[v] + w) { d[to] = d[v] + w; que.emplace(d[to], to); } } } rep(t, N) { for (auto& [to, w] : g[t]) { if (to == s) { chmin(ans, d[t] + w); } } } } if (ans == INF) ans = -1; cout << ans << endl; } return 0; }