結果
問題 | No.957 植林 |
ユーザー | vwxyz |
提出日時 | 2023-06-19 14:54:38 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 362 ms / 2,000 ms |
コード長 | 6,348 bytes |
コンパイル時間 | 1,386 ms |
コンパイル使用メモリ | 118,372 KB |
実行使用メモリ | 9,744 KB |
最終ジャッジ日時 | 2024-06-27 03:17:25 |
合計ジャッジ時間 | 11,315 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 37 ms
8,680 KB |
testcase_04 | AC | 36 ms
8,760 KB |
testcase_05 | AC | 39 ms
8,960 KB |
testcase_06 | AC | 41 ms
9,060 KB |
testcase_07 | AC | 37 ms
8,788 KB |
testcase_08 | AC | 33 ms
8,884 KB |
testcase_09 | AC | 34 ms
8,760 KB |
testcase_10 | AC | 35 ms
9,100 KB |
testcase_11 | AC | 34 ms
8,888 KB |
testcase_12 | AC | 33 ms
8,740 KB |
testcase_13 | AC | 29 ms
8,104 KB |
testcase_14 | AC | 36 ms
9,324 KB |
testcase_15 | AC | 32 ms
8,904 KB |
testcase_16 | AC | 29 ms
8,000 KB |
testcase_17 | AC | 30 ms
8,640 KB |
testcase_18 | AC | 251 ms
8,924 KB |
testcase_19 | AC | 271 ms
9,052 KB |
testcase_20 | AC | 286 ms
9,060 KB |
testcase_21 | AC | 289 ms
9,192 KB |
testcase_22 | AC | 306 ms
9,192 KB |
testcase_23 | AC | 320 ms
9,468 KB |
testcase_24 | AC | 342 ms
9,484 KB |
testcase_25 | AC | 359 ms
9,612 KB |
testcase_26 | AC | 359 ms
9,624 KB |
testcase_27 | AC | 358 ms
9,484 KB |
testcase_28 | AC | 357 ms
9,692 KB |
testcase_29 | AC | 360 ms
9,612 KB |
testcase_30 | AC | 354 ms
9,612 KB |
testcase_31 | AC | 249 ms
8,796 KB |
testcase_32 | AC | 272 ms
9,044 KB |
testcase_33 | AC | 289 ms
9,060 KB |
testcase_34 | AC | 285 ms
9,192 KB |
testcase_35 | AC | 303 ms
9,316 KB |
testcase_36 | AC | 327 ms
9,336 KB |
testcase_37 | AC | 344 ms
9,612 KB |
testcase_38 | AC | 357 ms
9,484 KB |
testcase_39 | AC | 362 ms
9,484 KB |
testcase_40 | AC | 360 ms
9,484 KB |
testcase_41 | AC | 22 ms
9,400 KB |
testcase_42 | AC | 24 ms
9,744 KB |
testcase_43 | AC | 48 ms
9,472 KB |
testcase_44 | AC | 49 ms
9,484 KB |
testcase_45 | AC | 2 ms
6,944 KB |
testcase_46 | AC | 2 ms
6,940 KB |
testcase_47 | AC | 2 ms
6,940 KB |
ソースコード
#ifndef ATCODER_INTERNAL_QUEUE_HPP #define ATCODER_INTERNAL_QUEUE_HPP 1 #include <vector> namespace atcoder { namespace internal { template <class T> struct simple_queue { std::vector<T> payload; int pos = 0; void reserve(int n) { payload.reserve(n); } int size() const { return int(payload.size()) - pos; } bool empty() const { return pos == int(payload.size()); } void push(const T& t) { payload.push_back(t); } T& front() { return payload[pos]; } void clear() { payload.clear(); pos = 0; } void pop() { pos++; } }; } // namespace internal } // namespace atcoder #endif // ATCODER_INTERNAL_QUEUE_HPP #ifndef ATCODER_MAXFLOW_HPP #define ATCODER_MAXFLOW_HPP 1 #include <algorithm> #include <cassert> #include <limits> #include <queue> #include <vector> namespace atcoder { template <class Cap> struct mf_graph { public: mf_graph() : _n(0) {} explicit mf_graph(int n) : _n(n), g(n) {} int add_edge(int from, int to, Cap cap) { assert(0 <= from && from < _n); assert(0 <= to && to < _n); assert(0 <= cap); int m = int(pos.size()); pos.push_back({from, int(g[from].size())}); int from_id = int(g[from].size()); int to_id = int(g[to].size()); if (from == to) to_id++; g[from].push_back(_edge{to, to_id, cap}); g[to].push_back(_edge{from, from_id, 0}); return m; } struct edge { int from, to; Cap cap, flow; }; edge get_edge(int i) { int m = int(pos.size()); assert(0 <= i && i < m); auto _e = g[pos[i].first][pos[i].second]; auto _re = g[_e.to][_e.rev]; return edge{pos[i].first, _e.to, _e.cap + _re.cap, _re.cap}; } std::vector<edge> edges() { int m = int(pos.size()); std::vector<edge> result; for (int i = 0; i < m; i++) { result.push_back(get_edge(i)); } return result; } void change_edge(int i, Cap new_cap, Cap new_flow) { int m = int(pos.size()); assert(0 <= i && i < m); assert(0 <= new_flow && new_flow <= new_cap); auto& _e = g[pos[i].first][pos[i].second]; auto& _re = g[_e.to][_e.rev]; _e.cap = new_cap - new_flow; _re.cap = new_flow; } Cap flow(int s, int t) { return flow(s, t, std::numeric_limits<Cap>::max()); } Cap flow(int s, int t, Cap flow_limit) { assert(0 <= s && s < _n); assert(0 <= t && t < _n); assert(s != t); std::vector<int> level(_n), iter(_n); internal::simple_queue<int> que; auto bfs = [&]() { std::fill(level.begin(), level.end(), -1); level[s] = 0; que.clear(); que.push(s); while (!que.empty()) { int v = que.front(); que.pop(); for (auto e : g[v]) { if (e.cap == 0 || level[e.to] >= 0) continue; level[e.to] = level[v] + 1; if (e.to == t) return; que.push(e.to); } } }; auto dfs = [&](auto self, int v, Cap up) { if (v == s) return up; Cap res = 0; int level_v = level[v]; for (int& i = iter[v]; i < int(g[v].size()); i++) { _edge& e = g[v][i]; if (level_v <= level[e.to] || g[e.to][e.rev].cap == 0) continue; Cap d = self(self, e.to, std::min(up - res, g[e.to][e.rev].cap)); if (d <= 0) continue; g[v][i].cap += d; g[e.to][e.rev].cap -= d; res += d; if (res == up) return res; } level[v] = _n; return res; }; Cap flow = 0; while (flow < flow_limit) { bfs(); if (level[t] == -1) break; std::fill(iter.begin(), iter.end(), 0); Cap f = dfs(dfs, t, flow_limit - flow); if (!f) break; flow += f; } return flow; } std::vector<bool> min_cut(int s) { std::vector<bool> visited(_n); internal::simple_queue<int> que; que.push(s); while (!que.empty()) { int p = que.front(); que.pop(); visited[p] = true; for (auto e : g[p]) { if (e.cap && !visited[e.to]) { visited[e.to] = true; que.push(e.to); } } } return visited; } private: int _n; struct _edge { int to, rev; Cap cap; }; std::vector<std::pair<int, int>> pos; std::vector<std::vector<_edge>> g; }; } // namespace atcoder #endif // ATCODER_MAXFLOW_HPP #include <iostream> #include <vector> // ここにMFGraphの定義を追加 int main() { int H, W; std::cin >> H >> W; std::vector<std::vector<long long>> G(H, std::vector<long long>(W)); for (int h = 0; h < H; h++) { for (int w = 0; w < W; w++) { std::cin >> G[h][w]; } } std::vector<long long> R(H); std::vector<long long> C(W); for (int h = 0; h < H; h++) { std::cin >> R[h]; } for (int w = 0; w < W; w++) { std::cin >> C[w]; } atcoder::mf_graph<long long> MFG(H + W + 2); int s = 0; int t = H + W + 1; long long ans = 0; for (int h = 0; h < H; h++) { long long cost = 0; for (int w = 0; w < W; w++) { cost += G[h][w]; } cost -= R[h]; if (cost >= 0) { MFG.add_edge(s, h + 1, cost); } else { MFG.add_edge(h + 1, t, -cost); ans += -cost; } } for (int w = 0; w < W; w++) { long long cost = -C[w]; if (cost >= 0) { MFG.add_edge(s, w + H + 1, cost); } else { MFG.add_edge(w + H + 1, t, -cost); ans += -cost; } } for (int h = 0; h < H; h++) { for (int w = 0; w < W; w++) { MFG.add_edge(h + 1, w + H + 1, G[h][w]); } } long long flow = MFG.flow(s, t); ans -= flow; std::cout << ans << std::endl; return 0; }