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 11:17:59 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 312 ms / 2,000 ms |
コード長 | 1,481 bytes |
コンパイル時間 | 2,655 ms |
コンパイル使用メモリ | 207,696 KB |
最終ジャッジ日時 | 2025-01-17 02:23:53 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 weight = int64_t;using edge = pair<int, weight>;using vertice = vector<edge>;using graph = vector<vertice>;using cost = tuple<int64_t, int, int>;int main() {constexpr int64_t inf = 1e18;int t, n, m;cin >> t >> n >> m;graph to(n);for (int i = 0; i < m; i++) {int u, v, w;cin >> u >> v >> w;u--; v--;to.at(u).emplace_back(v, w);if (t == 0) {to.at(v).emplace_back(u, w);}}int64_t ans = inf;for (int i = 0; i < n; i++) {vector<int64_t> d(n, inf);priority_queue<cost, vector<cost>, greater<cost>> q;q.emplace(0, i, -1);while (not q.empty()) {auto [dist, v, from] = q.top();q.pop();if (d.at(v) <= dist) continue;if (dist) {d.at(v) = dist;}for (auto next : to.at(v)) {auto [next_v, next_w] = next;if (next_v == from) continue;int64_t next_dist = dist + next_w;if (t == 0) {ans = min(ans, d.at(next_v) + next_dist);}if (d.at(next_v) <= next_dist) continue;q.emplace(next_dist, next_v, v);}}ans = min(ans, d.at(i));}if (ans == inf) {cout << -1 << endl;} else {cout << ans << endl;}}