結果
問題 |
No.957 植林
|
ユーザー |
![]() |
提出日時 | 2019-12-19 22:30:45 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 7,274 bytes |
コンパイル時間 | 1,418 ms |
コンパイル使用メモリ | 87,928 KB |
最終ジャッジ日時 | 2025-01-08 12:51:38 |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 31 TLE * 14 |
ソースコード
//#define NDEBUG #include <algorithm> #include <cstddef> #include <cstdint> #include <iostream> #include <utility> #include <vector> namespace n91 { using i8 = std::int_fast8_t; using i32 = std::int_fast32_t; using i64 = std::int_fast64_t; using u8 = std::uint_fast8_t; using u32 = std::uint_fast32_t; using u64 = std::uint_fast64_t; using isize = std::ptrdiff_t; using usize = std::size_t; struct rep { struct itr { usize i; constexpr itr(const usize i) noexcept : i(i) {} void operator++() noexcept { ++i; } constexpr usize operator*() const noexcept { return i; } constexpr bool operator!=(const itr x) const noexcept { return i != x.i; } }; const itr f, l; constexpr rep(const usize f, const usize l) noexcept : f(std::min(f, l)), l(l) {} constexpr auto begin() const noexcept { return f; } constexpr auto end() const noexcept { return l; } }; struct revrep { struct itr { usize i; constexpr itr(const usize i) noexcept : i(i) {} void operator++() noexcept { --i; } constexpr usize operator*() const noexcept { return i; } constexpr bool operator!=(const itr x) const noexcept { return i != x.i; } }; const itr f, l; constexpr revrep(const usize f, const usize l) noexcept : f(l - 1), l(std::min(f, l) - 1) {} constexpr auto begin() const noexcept { return f; } constexpr auto end() const noexcept { return l; } }; template <class T> auto md_vec(const usize n, const T &value) { return std::vector<T>(n, value); } template <class... Args> auto md_vec(const usize n, Args... args) { return std::vector<decltype(md_vec(args...))>(n, md_vec(args...)); } template <class T> constexpr T difference(const T &a, const T &b) noexcept { if (a < b) { return b - a; } else { return a - b; } } template <class T> void chmin(T &a, const T &b) noexcept { if (b < a) { a = b; } } template <class T> void chmax(T &a, const T &b) noexcept { if (a < b) { a = b; } } template <class F> class fix_point : private F { public: explicit constexpr fix_point(F &&f) : F(std::forward<F>(f)) {} template <class... Args> constexpr decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, std::forward<Args>(args)...); } }; template <class F> constexpr decltype(auto) make_fix(F &&f) { return fix_point<F>(std::forward<F>(f)); } template <class T> T scan() { T ret; std::cin >> ret; return ret; } } // namespace n91 #ifndef NIMI_GRAPH #define NIMI_GRAPH #include <vector> namespace nimi { struct base_edge { int from; int to; base_edge(int from, int to) : from(from), to(to) { } }; template<class T> struct edge : public base_edge { T val; edge(int from, int to, T v) : base_edge(from, to), val(v) { } }; template<> struct edge<void> : public base_edge { edge(int from, int to) : base_edge(from , to) { } }; template<class C> struct maxflow_edge : public base_edge { C cap; std::size_t rev; maxflow_edge(int from, int to, C cap, std::size_t rev) : base_edge(from, to), cap(cap), rev(rev) { } }; template<class C> struct mcf_edge : public base_edge { C cap; C cost; std::size_t rev; mcf_edge(int from, int to, C cap, C cost, std::size_t rev) : base_edge(from, to), cap(cap), cost(cost), rev(rev) { } }; template<class T> struct directed_graph : public std::vector<std::vector<edge<T>>> { directed_graph(std::size_t n): std::vector<std::vector<edge<T>>>(n) { } void add_edge(const edge<T>& e) { this->at(e.from).push_back(e); } }; template<class T> struct undirected_graph : public std::vector<std::vector<edge<T>>> { undirected_graph(std::size_t n): std::vector<std::vector<edge<T>>>(n) { } void add_edge(const edge<T>& e) { this->at(e.from).push_back(e); edge<T> re = e; std::swap(re.from, re.to); this->at(e.to).push_back(re); } }; template<class C> struct maxflow_graph : public std::vector<std::vector<maxflow_edge<C>>> { maxflow_graph(std::size_t n): std::vector<std::vector<maxflow_edge<C>>>(n) { } void add_edge(int from, int to, C cap, std::size_t rev_cap = 0) { this->at(from).push_back(maxflow_edge<C>(from, to, cap, this->at(to).size())); this->at(to).push_back(maxflow_edge<C>(to, from, rev_cap, this->at(from).size() - 1)); } }; template<class C> struct mcf_graph : public std::vector<std::vector<mcf_edge<C>>> { mcf_graph(std::size_t n) : std::vector<std::vector<mcf_edge<C>>>(n) { } void add_edge(int from, int to, C cap, C cost, std::size_t rev_cap = 0) { this->at(from).push_back(mcf_edge<C>(from, to, cap, cost, this->at(to).size())); this->at(to).push_back(mcf_edge<C>(to, from, rev_cap, -cost, this->at(from).size() - 1)); } }; } #endif #ifndef NIMI_GRAPH_MAXFLOW_FIFOPR #define NIMI_GRAPH_MAXFLOW_FIFOPR #include <queue> #include <vector> namespace nimi { template<class C> C fifo_push_relabel(nimi::maxflow_graph<C>& g, std::size_t s, std::size_t t) { std::queue<int> que; std::size_t n = g.size(); std::vector<C> ex(n); std::vector<int> d(n, 1); d[s] = n; d[t] = 0; C ZERO = C(); for(auto& e: g[s]) { if(e.to != t && e.to != s && ex[e.to] == ZERO && e.cap > ZERO) { que.push(e.to); } ex[e.to] += e.cap; g[e.to][e.rev].cap = e.cap; e.cap = ZERO; } while(!que.empty()) { int v = que.front(); que.pop(); while(ex[v] > ZERO) { bool admissible = false; for(auto& e: g[v]) { if(d[v] == d[e.to] + 1 && e.cap > ZERO) { admissible = true; C delta = std::min(ex[v], e.cap); if(e.to != t && e.to != s && ex[e.to] == ZERO && delta > ZERO) { que.push(e.to); } ex[v] -= delta; ex[e.to] += delta; e.cap -= delta; g[e.to][e.rev].cap += delta; } } if(!admissible) { d[v] = n + 1; for(auto& e: g[v]) { if(e.cap > ZERO) { d[v] = std::min(d[v], d[e.to] + 1); } } if(v != s && v != t && ex[v] > ZERO && d[v] < n + 1) { que.push(v); } else { break; } } } } return ex[t]; } } #endif #include <algorithm> #include <iostream> #include <utility> #include <vector> namespace n91 { void main_() { /* std::ios::sync_with_stdio(false); std::cin.tie(nullptr); //*/ const usize h = scan<usize>(); const usize w = scan<usize>(); nimi::maxflow_graph<u64> g(h + w + 2); const usize s = h + w; const usize t = h + w + 1; for (const usize i : rep(0, h)) { for (const usize j : rep(0, w)) { const u64 c = scan<u64>(); g.add_edge(i, h + j, c); g.add_edge(s, i, c); } } u64 ans = 0; for (const usize i : rep(0, h)) { const u64 c = scan<u64>(); ans += c; g.add_edge(i, t, c); } for (const usize i : rep(0, w)) { const u64 c = scan<u64>(); ans += c; g.add_edge(h + i, t, c); } std::cout << ans - nimi::fifo_push_relabel(g, s, t) << std::endl; } } // namespace n91 int main() { n91::main_(); return 0; }