結果
| 問題 | No.2805 Go to School |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-07-12 22:48:48 |
| 言語 | C++17 (gcc 15.2.0 + boost 1.90.0) |
| 結果 |
AC
|
| 実行時間 | 123 ms / 2,000 ms |
| コード長 | 1,678 bytes |
| 記録 | |
| コンパイル時間 | 1,274 ms |
| コンパイル使用メモリ | 224,040 KB |
| 実行使用メモリ | 17,800 KB |
| 最終ジャッジ日時 | 2026-07-08 14:22:58 |
| 合計ジャッジ時間 | 5,230 ms |
|
ジャッジサーバーID (参考情報) |
judge3_0 / judge2_0 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 36 |
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:16:37: warning: ignoring return value of 'std::basic_ostream<_CharT, _Traits>* std::basic_ios<_CharT, _Traits>::tie() const [with _CharT = char; _Traits = std::char_traits<char>]', declared with attribute 'nodiscard' [-Wunused-result]
16 | ios::sync_with_stdio(0); cin.tie();
| ~~~~~~~^~
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/ios:48,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/istream:42,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/sstream:42,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/complex:50,
from /home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:141,
from main.cpp:1:
/home/linuxbrew/.linuxbrew/Cellar/gcc@15/15.3.0/include/c++/15/bits/basic_ios.h:310:7: note: declared here
310 | tie() const
| ^~~
ソースコード
#include <bits/stdc++.h>
//#include <atcoder/all>
using ll = long long;
#define MOD 1000000007
#define Mod 998244353
const int MAX = 1000000005;
const long long INF = 1000000000000000005LL;
using namespace std;
//using namespace atcoder;
#define MOD 1000000007
using i_i = pair<int, int>;
using ll_i = pair<ll, int>;
int main() {
ios::sync_with_stdio(0); cin.tie();
int N, M, L, S, E;
cin >> N >> M >> L >> S >> E;
vector<vector<i_i>> G(N);
for (int i = 0; i < M; i++) {
int a, b, t;
cin >> a >> b >> t;
a--; b--;
G[a].push_back({b, t});
G[b].push_back({a, t});
}
vector<int> T(L);
for (int i = 0; i < L; i++) {cin >> T[i]; T[i]--;}
priority_queue<ll_i, vector<ll_i>, greater<ll_i>> pq;
vector<ll> dist(N, INF);
pq.push({0, 0});
dist[0] = 0;
while (pq.size()) {
auto [d, v] = pq.top();
pq.pop();
if (d != dist[v]) continue;
for (auto [nv, c] : G[v]) {
if (dist[nv] <= d + c) continue;
dist[nv] = d + c;
pq.push({d + c, nv});
}
}
vector<ll> dist2(N, INF);
dist2[N-1] = 0;
pq.push({0, N-1});
while (pq.size()) {
auto [d, v] = pq.top();
pq.pop();
if (d != dist2[v]) continue;
for (auto [nv, c] : G[v]) {
if (dist2[nv] <= d + c) continue;
dist2[nv] = d + c;
pq.push({d + c, nv});
}
}
ll ans = INF;
for (int i = 0; i < L; i++) {
ll d = dist[T[i]];
if (d >= S + E) continue;
ans = min(ans, max((ll)S, d) + 1 + dist2[T[i]]);
}
cout << (ans == INF ? -1 : ans) << endl;
}