結果
問題 | No.1316 Maximum Minimum Spanning Tree |
ユーザー | hitonanode |
提出日時 | 2021-02-21 01:01:14 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 26 ms / 2,000 ms |
コード長 | 3,285 bytes |
コンパイル時間 | 1,513 ms |
コンパイル使用メモリ | 121,592 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-18 23:47:11 |
合計ジャッジ時間 | 4,865 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 15 ms
6,940 KB |
testcase_08 | AC | 18 ms
6,944 KB |
testcase_09 | AC | 22 ms
6,940 KB |
testcase_10 | AC | 22 ms
6,940 KB |
testcase_11 | AC | 6 ms
6,944 KB |
testcase_12 | AC | 5 ms
6,940 KB |
testcase_13 | AC | 5 ms
6,944 KB |
testcase_14 | AC | 5 ms
6,940 KB |
testcase_15 | AC | 22 ms
6,940 KB |
testcase_16 | AC | 25 ms
6,944 KB |
testcase_17 | AC | 24 ms
6,944 KB |
testcase_18 | AC | 25 ms
6,944 KB |
testcase_19 | AC | 3 ms
6,940 KB |
testcase_20 | AC | 3 ms
6,940 KB |
testcase_21 | AC | 3 ms
6,944 KB |
testcase_22 | AC | 3 ms
6,944 KB |
testcase_23 | AC | 4 ms
6,944 KB |
testcase_24 | AC | 4 ms
6,944 KB |
testcase_25 | AC | 4 ms
6,940 KB |
testcase_26 | AC | 4 ms
6,940 KB |
testcase_27 | AC | 3 ms
6,944 KB |
testcase_28 | AC | 3 ms
6,940 KB |
testcase_29 | AC | 3 ms
6,940 KB |
testcase_30 | AC | 3 ms
6,944 KB |
testcase_31 | AC | 4 ms
6,940 KB |
testcase_32 | AC | 4 ms
6,944 KB |
testcase_33 | AC | 4 ms
6,940 KB |
testcase_34 | AC | 3 ms
6,944 KB |
testcase_35 | AC | 3 ms
6,944 KB |
testcase_36 | AC | 3 ms
6,940 KB |
testcase_37 | AC | 3 ms
6,940 KB |
testcase_38 | AC | 3 ms
6,944 KB |
testcase_39 | AC | 4 ms
6,940 KB |
testcase_40 | AC | 4 ms
6,940 KB |
testcase_41 | AC | 3 ms
6,940 KB |
testcase_42 | AC | 3 ms
6,940 KB |
testcase_43 | AC | 11 ms
6,944 KB |
testcase_44 | AC | 10 ms
6,944 KB |
testcase_45 | AC | 18 ms
6,940 KB |
testcase_46 | AC | 17 ms
6,940 KB |
testcase_47 | AC | 14 ms
6,940 KB |
testcase_48 | AC | 13 ms
6,944 KB |
testcase_49 | AC | 13 ms
6,940 KB |
testcase_50 | AC | 13 ms
6,940 KB |
testcase_51 | AC | 12 ms
6,940 KB |
testcase_52 | AC | 12 ms
6,944 KB |
testcase_53 | AC | 20 ms
6,940 KB |
testcase_54 | AC | 21 ms
6,944 KB |
testcase_55 | AC | 21 ms
6,944 KB |
testcase_56 | AC | 21 ms
6,940 KB |
testcase_57 | AC | 20 ms
6,940 KB |
testcase_58 | AC | 20 ms
6,940 KB |
testcase_59 | AC | 20 ms
6,940 KB |
testcase_60 | AC | 21 ms
6,944 KB |
testcase_61 | AC | 20 ms
6,944 KB |
testcase_62 | AC | 23 ms
6,940 KB |
testcase_63 | AC | 19 ms
6,940 KB |
testcase_64 | AC | 22 ms
6,940 KB |
testcase_65 | AC | 25 ms
6,940 KB |
testcase_66 | AC | 25 ms
6,944 KB |
testcase_67 | AC | 24 ms
6,940 KB |
testcase_68 | AC | 22 ms
6,940 KB |
testcase_69 | AC | 24 ms
6,944 KB |
testcase_70 | AC | 25 ms
6,944 KB |
testcase_71 | AC | 24 ms
6,944 KB |
testcase_72 | AC | 24 ms
6,944 KB |
testcase_73 | AC | 25 ms
6,940 KB |
testcase_74 | AC | 26 ms
6,940 KB |
testcase_75 | AC | 3 ms
6,940 KB |
testcase_76 | AC | 4 ms
6,940 KB |
testcase_77 | AC | 4 ms
6,944 KB |
testcase_78 | AC | 24 ms
6,944 KB |
testcase_79 | AC | 24 ms
6,940 KB |
testcase_80 | AC | 25 ms
6,944 KB |
testcase_81 | AC | 14 ms
6,940 KB |
ソースコード
#include <algorithm> #include <functional> #include <iostream> #include <limits> #include <numeric> #include <queue> #include <utility> #include <vector> #include <atcoder/maxflow> // LinearProgrammingOnBasePolyhedron : Maximize/minimize linear function on base polyhedron, using Edmonds' algorithm // // maximize/minimize cx s.t. (x on some base polyhedron) // Reference: <https://www.amazon.co.jp/dp/B01N6G0579>, Sec. 2.4, Algorithm 2.2-2.3 // "Submodular Functions, Matroids, and Certain Polyhedra" [Edmonds+, 1970] template <typename Tvalue> struct LinearProgrammingOnBasePolyhedron { using Tfunc = std::function<Tvalue(int, const std::vector<Tvalue> &)>; static Tvalue EPS; int N; std::vector<Tvalue> c; Tfunc maximize_xi; Tvalue xsum; bool minimize; Tvalue fun; std::vector<Tvalue> x; bool infeasible; void _init(const std::vector<Tvalue> &c_, Tfunc q_, Tvalue xsum_, Tvalue xlowerlimit, bool minimize_) { N = c_.size(); c = c_; maximize_xi = q_; xsum = xsum_; minimize = minimize_; fun = 0; x.assign(N, xlowerlimit); infeasible = false; } void _solve() { std::vector<std::pair<Tvalue, int>> c2i(N); for (int i = 0; i < N; i++) c2i[i] = std::make_pair(c[i], i); std::sort(c2i.begin(), c2i.end()); if (!minimize) std::reverse(c2i.begin(), c2i.end()); for (const auto &p : c2i) { const int i = p.second; x[i] = maximize_xi(i, x); } if (std::abs(std::accumulate(x.begin(), x.end(), Tvalue(0)) - xsum) > EPS) { infeasible = true; } else { for (int i = 0; i < N; i++) fun += x[i] * c[i]; } } LinearProgrammingOnBasePolyhedron(const std::vector<Tvalue> &c_, Tfunc q_, Tvalue xsum_, Tvalue xlowerlimit, bool minimize_) { _init(c_, q_, xsum_, xlowerlimit, minimize_); _solve(); } }; template <> long long LinearProgrammingOnBasePolyhedron<long long>::EPS = 0; template <> long double LinearProgrammingOnBasePolyhedron<long double>::EPS = 1e-12; using std::cin, std::cout, std::vector; int main() { using Num = long long; int N, M; long long K; cin >> N >> M >> K; vector<int> A(M), B(M); vector<Num> C(M), D(M); for (int i = 0; i < M; i++) { cin >> A[i] >> B[i] >> C[i] >> D[i]; A[i]--, B[i]--; } auto maximize_xi = [&](int ie, const vector<Num> &xnow) -> Num { atcoder::mf_graph<Num> mf(N + 2); mf.add_edge(N, A[ie], 2 * K * N); mf.add_edge(N, B[ie], 2 * K * N); for (int je = 0; je < M; je++) { mf.add_edge(A[je], B[je], xnow[je]); mf.add_edge(B[je], A[je], xnow[je]); mf.add_edge(N, A[je], xnow[je]); mf.add_edge(N, B[je], xnow[je]); } for (int iv = 0; iv < N; iv++) mf.add_edge(iv, N + 1, 2 * K); Num ret = mf.flow(N, N + 1) / 2 - K - std::accumulate(xnow.begin(), xnow.end(), (Num)0); return std::min(ret, D[ie]); }; LinearProgrammingOnBasePolyhedron<Num> solver(C, maximize_xi, K * (N - 1), 0, true); if (solver.infeasible) { cout << "-1\n"; } else { cout << (long long)solver.fun << '\n'; } }