結果
問題 | No.848 なかよし旅行 |
ユーザー | stoq |
提出日時 | 2020-03-26 00:37:53 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 115 ms / 2,000 ms |
コード長 | 2,929 bytes |
コンパイル時間 | 1,961 ms |
コンパイル使用メモリ | 179,252 KB |
実行使用メモリ | 36,704 KB |
最終ジャッジ日時 | 2024-11-08 01:12:55 |
合計ジャッジ時間 | 4,023 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 115 ms
36,704 KB |
testcase_01 | AC | 10 ms
22,144 KB |
testcase_02 | AC | 9 ms
22,124 KB |
testcase_03 | AC | 10 ms
22,232 KB |
testcase_04 | AC | 9 ms
22,108 KB |
testcase_05 | AC | 10 ms
22,144 KB |
testcase_06 | AC | 9 ms
22,020 KB |
testcase_07 | AC | 10 ms
22,144 KB |
testcase_08 | AC | 11 ms
22,160 KB |
testcase_09 | AC | 12 ms
22,400 KB |
testcase_10 | AC | 11 ms
22,256 KB |
testcase_11 | AC | 32 ms
26,996 KB |
testcase_12 | AC | 37 ms
28,160 KB |
testcase_13 | AC | 48 ms
30,344 KB |
testcase_14 | AC | 22 ms
23,680 KB |
testcase_15 | AC | 46 ms
30,208 KB |
testcase_16 | AC | 75 ms
35,328 KB |
testcase_17 | AC | 53 ms
32,684 KB |
testcase_18 | AC | 30 ms
26,280 KB |
testcase_19 | AC | 30 ms
25,344 KB |
testcase_20 | AC | 16 ms
22,528 KB |
testcase_21 | AC | 62 ms
32,768 KB |
testcase_22 | AC | 59 ms
33,792 KB |
testcase_23 | AC | 15 ms
22,444 KB |
testcase_24 | AC | 10 ms
21,984 KB |
testcase_25 | AC | 77 ms
35,328 KB |
testcase_26 | AC | 10 ms
22,028 KB |
testcase_27 | AC | 9 ms
22,144 KB |
testcase_28 | AC | 10 ms
22,144 KB |
testcase_29 | AC | 9 ms
22,144 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; //#include <boost/multiprecision/cpp_int.hpp> //using multiInt = boost::multiprecision::cpp_int; using ll = long long int; using ld = long double; using pii = pair<int, int>; using pll = pair<ll, ll>; template <typename Q_type> using smaller_queue = priority_queue<Q_type, vector<Q_type>, greater<Q_type>>; const int MOD_TYPE = 1; const ll MOD = (MOD_TYPE == 1 ? (ll)(1e9 + 7) : 998244353); const int INF = (int)1e9; const ll LINF = (ll)4e18; const ld DINF = 1e12; const ld PI = acos(-1.0); const ld EPS = 1e-11; #define REP(i, m, n) for (ll i = m; i < (ll)(n); ++i) #define rep(i, n) REP(i, 0, n) #define MP make_pair #define MT make_tuple #define YES(n) cout << ((n) ? "YES" : "NO") << "\n" #define Yes(n) cout << ((n) ? "Yes" : "No") << endl #define Possible(n) cout << ((n) ? "Possible" : "Impossible") << endl #define possible(n) cout << ((n) ? "possible" : "impossible") << endl #define Yay(n) cout << ((n) ? "Yay!" : ":(") << endl #define all(v) v.begin(), v.end() #define NP(v) next_permutation(all(v)) #define dbg(x) cerr << #x << ":" << x << endl; vector<int> Dx = {0, 0, -1, 1, -1, 1, -1, 1, 0}; vector<int> Dy = {1, -1, 0, 0, -1, -1, 1, 1, 0}; template <typename T = ll> struct dijkstra { static const int MAX_V = 200010; const T INF_d; dijkstra(T INF_d_ = LINF) : INF_d(INF_d_) {} struct edge { int to; T cost; }; vector<edge> E[MAX_V]; T d[MAX_V]; using pt = pair<T, int>; void add_edge(int a, int b, T c, bool undirected = false) { E[a].push_back(edge{b, c}); if (undirected) E[b].push_back(edge{a, c}); } void calc(int s) { priority_queue<pt, vector<pt>, greater<pt>> que; fill(d, d + MAX_V, INF_d); que.emplace(0LL, s); d[s] = 0; while (!que.empty()) { pt p = que.top(); que.pop(); int v = p.second; if (d[v] < p.first) continue; for (auto &&e : E[v]) { if (d[e.to] > d[v] + e.cost) { d[e.to] = d[v] + e.cost; que.emplace(d[e.to], e.to); } } } } }; int main() { cin.tie(0); ios::sync_with_stdio(false); cout << setprecision(30) << setiosflags(ios::fixed); ll n, m, p, q, t; cin >> n >> m >> p >> q >> t; p--, q--; dijkstra<> ds0, dsp, dsq; rep(i, m) { ll a, b, c; cin >> a >> b >> c; a--, b--; ds0.add_edge(a, b, c, true); dsp.add_edge(a, b, c, true); dsq.add_edge(a, b, c, true); } ds0.calc(0); dsp.calc(p); dsq.calc(q); if (ds0.d[p] + ds0.d[q] + dsp.d[q] <= t) { cout << t << endl; return 0; } ll Max = -1; rep(i, n) REP(j, i, n) { ll t0 = ds0.d[i] + ds0.d[j]; ll t1 = dsp.d[i] + dsp.d[j]; ll t2 = dsq.d[i] + dsq.d[j]; ll total = t0 + max(t1, t2); if (total > t) continue; ll together = t - max(t1, t2); Max = max(Max, together); } cout << Max << endl; return 0; }