結果
問題 | No.2712 Play more! |
ユーザー | ei1333333 |
提出日時 | 2024-03-31 13:43:25 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 450 ms / 2,000 ms |
コード長 | 5,841 bytes |
コンパイル時間 | 2,499 ms |
コンパイル使用メモリ | 214,440 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-09-30 23:44:43 |
合計ジャッジ時間 | 6,002 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,824 KB |
testcase_02 | AC | 1 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,820 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,820 KB |
testcase_07 | AC | 150 ms
6,820 KB |
testcase_08 | AC | 151 ms
6,816 KB |
testcase_09 | AC | 149 ms
6,820 KB |
testcase_10 | AC | 2 ms
6,816 KB |
testcase_11 | AC | 86 ms
6,816 KB |
testcase_12 | AC | 388 ms
6,816 KB |
testcase_13 | AC | 50 ms
6,820 KB |
testcase_14 | AC | 235 ms
6,816 KB |
testcase_15 | AC | 450 ms
6,820 KB |
testcase_16 | AC | 30 ms
6,816 KB |
testcase_17 | AC | 7 ms
6,820 KB |
testcase_18 | AC | 48 ms
6,820 KB |
testcase_19 | AC | 14 ms
6,820 KB |
testcase_20 | AC | 93 ms
6,816 KB |
testcase_21 | AC | 37 ms
6,820 KB |
testcase_22 | AC | 336 ms
6,824 KB |
testcase_23 | AC | 11 ms
6,816 KB |
testcase_24 | AC | 46 ms
6,824 KB |
testcase_25 | AC | 6 ms
6,820 KB |
testcase_26 | AC | 57 ms
6,816 KB |
testcase_27 | AC | 64 ms
6,820 KB |
testcase_28 | AC | 10 ms
6,820 KB |
testcase_29 | AC | 48 ms
6,816 KB |
testcase_30 | AC | 389 ms
6,820 KB |
testcase_31 | AC | 3 ms
6,820 KB |
testcase_32 | AC | 3 ms
6,824 KB |
testcase_33 | AC | 2 ms
6,820 KB |
testcase_34 | AC | 2 ms
6,820 KB |
testcase_35 | AC | 2 ms
6,816 KB |
ソースコード
#line 1 "template/template.hpp" #include<bits/stdc++.h> using namespace std; using int64 = long long; const int mod = 1e9 + 7; const int64 infll = (1LL << 62) - 1; const int inf = (1 << 30) - 1; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup; template< typename T1, typename T2 > ostream &operator<<(ostream &os, const pair< T1, T2 >& p) { os << p.first << " " << p.second; return os; } template< typename T1, typename T2 > istream &operator>>(istream &is, pair< T1, T2 > &p) { is >> p.first >> p.second; return is; } template< typename T > ostream &operator<<(ostream &os, const vector< T > &v) { for(int i = 0; i < (int) v.size(); i++) { os << v[i] << (i + 1 != v.size() ? " " : ""); } return os; } template< typename T > istream &operator>>(istream &is, vector< T > &v) { for(T &in : v) is >> in; return is; } template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); } template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); } template< typename T = int64 > vector< T > make_v(size_t a) { return vector< T >(a); } template< typename T, typename... Ts > auto make_v(size_t a, Ts... ts) { return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...)); } template< typename T, typename V > typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) { t = v; } template< typename T, typename V > typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) { for(auto &e : t) fill_v(e, v); } template< typename F > struct FixPoint : F { explicit FixPoint(F &&f) : F(forward< F >(f)) {} template< typename... Args > decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, forward< Args >(args)...); } }; template< typename F > inline decltype(auto) MFP(F &&f) { return FixPoint< F >{forward< F >(f)}; } #line 2 "shortest-path/bellman-ford.hpp" #line 2 "graph/graph-template.hpp" template <typename T> struct edge { int src, to; T cost; edge(int _to, T _cost) : src(-1), to(_to), cost(_cost) {} edge(int _src, int _to, T _cost) : src(_src), to(_to), cost(_cost) {} edge &operator=(const int &x) { to = x; return *this; } operator int() const { return to; } }; template <typename T> using Edges = vector<edge<T>>; template <typename T> using WeightedGraph = vector<Edges<T>>; using UnweightedGraph = vector<vector<int>>; // Input of (Unweighted) Graph UnweightedGraph graph(int N, int M = -1, bool is_directed = false, bool is_1origin = true) { UnweightedGraph g(N); if (M == -1) M = N - 1; for (int _ = 0; _ < M; _++) { int x, y; cin >> x >> y; if (is_1origin) x--, y--; g[x].push_back(y); if (!is_directed) g[y].push_back(x); } return g; } // Input of Weighted Graph template <typename T> WeightedGraph<T> wgraph(int N, int M = -1, bool is_directed = false, bool is_1origin = true) { WeightedGraph<T> g(N); if (M == -1) M = N - 1; for (int _ = 0; _ < M; _++) { int x, y; cin >> x >> y; T c; cin >> c; if (is_1origin) x--, y--; g[x].emplace_back(x, y, c); if (!is_directed) g[y].emplace_back(y, x, c); } return g; } // Input of Edges template <typename T> Edges<T> esgraph(int N, int M, int is_weighted = true, bool is_1origin = true) { Edges<T> es; for (int _ = 0; _ < M; _++) { int x, y; cin >> x >> y; T c; if (is_weighted) cin >> c; else c = 1; if (is_1origin) x--, y--; es.emplace_back(x, y, c); } return es; } // Input of Adjacency Matrix template <typename T> vector<vector<T>> adjgraph(int N, int M, T INF, int is_weighted = true, bool is_directed = false, bool is_1origin = true) { vector<vector<T>> d(N, vector<T>(N, INF)); for (int _ = 0; _ < M; _++) { int x, y; cin >> x >> y; T c; if (is_weighted) cin >> c; else c = 1; if (is_1origin) x--, y--; d[x][y] = c; if (!is_directed) d[y][x] = c; } return d; } /** * @brief グラフテンプレート * @docs docs/graph/graph-template.md */ #line 6 "shortest-path/bellman-ford.hpp" // bellman-ford法 // goalが存在しないとき-> 負閉路が存在するときは空列を返す // goalが存在するとき -> startとgoalの間に負閉路が存在する時に負閉路を返す template <typename T> vector<T> bellman_ford(int N, Edges<T> &es, int start = 0, int goal = -1) { T INF = numeric_limits<T>::max() / 2; vector<T> d(N, INF); d[start] = 0; for (int i = 0; i < N; i++) { bool update = false; for (auto &e : es) { if (d[e.src] == INF) continue; if (d[e.to] > d[e.src] + e.cost) { update = true, d[e.to] = d[e.src] + e.cost; } } if (!update) return d; } if (goal == -1) return vector<T>(); vector<bool> negative(N, false); for (int i = 0; i < N; i++) { for (auto &e : es) { if (d[e.src] == INF) continue; if (d[e.to] > d[e.src] + e.cost) negative[e.to] = true, d[e.to] = d[e.src] + e.cost; if (negative[e.src] == true) negative[e.to] = true; } } if (negative[goal] == true) return vector<T>(); else return d; } int main() { int N, M; cin >> N >> M; vector< int > A(N); cin >> A; Edges< int64 > es; for(int i = 0; i < N; i++) { es.emplace_back(i, i + N, -A[i]); } for(int i = 0; i < M; i++) { int a, b, c; cin >> a >> b >> c; --a, --b; es.emplace_back(a + N, b, c); } auto ret = bellman_ford(N + N, es, 0, N + N - 1); if(ret.empty()) cout << "inf" << endl; else cout << -ret.back() << endl; }