結果
問題 | No.957 植林 |
ユーザー | t98slider |
提出日時 | 2023-11-13 23:40:05 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 312 ms / 2,000 ms |
コード長 | 5,231 bytes |
コンパイル時間 | 2,302 ms |
コンパイル使用メモリ | 215,368 KB |
実行使用メモリ | 9,280 KB |
最終ジャッジ日時 | 2024-09-26 03:25:59 |
合計ジャッジ時間 | 10,609 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 21 ms
8,512 KB |
testcase_04 | AC | 19 ms
8,388 KB |
testcase_05 | AC | 23 ms
8,528 KB |
testcase_06 | AC | 23 ms
8,900 KB |
testcase_07 | AC | 22 ms
8,528 KB |
testcase_08 | AC | 17 ms
8,604 KB |
testcase_09 | AC | 17 ms
8,600 KB |
testcase_10 | AC | 18 ms
8,668 KB |
testcase_11 | AC | 18 ms
8,608 KB |
testcase_12 | AC | 16 ms
8,596 KB |
testcase_13 | AC | 14 ms
7,624 KB |
testcase_14 | AC | 18 ms
9,020 KB |
testcase_15 | AC | 16 ms
8,512 KB |
testcase_16 | AC | 14 ms
7,744 KB |
testcase_17 | AC | 16 ms
8,384 KB |
testcase_18 | AC | 216 ms
8,616 KB |
testcase_19 | AC | 230 ms
8,736 KB |
testcase_20 | AC | 245 ms
8,748 KB |
testcase_21 | AC | 242 ms
8,756 KB |
testcase_22 | AC | 266 ms
8,876 KB |
testcase_23 | AC | 286 ms
9,012 KB |
testcase_24 | AC | 282 ms
9,264 KB |
testcase_25 | AC | 304 ms
9,144 KB |
testcase_26 | AC | 304 ms
9,148 KB |
testcase_27 | AC | 302 ms
9,148 KB |
testcase_28 | AC | 302 ms
9,276 KB |
testcase_29 | AC | 310 ms
9,276 KB |
testcase_30 | AC | 312 ms
9,148 KB |
testcase_31 | AC | 219 ms
8,620 KB |
testcase_32 | AC | 225 ms
8,748 KB |
testcase_33 | AC | 252 ms
8,748 KB |
testcase_34 | AC | 242 ms
8,884 KB |
testcase_35 | AC | 272 ms
9,132 KB |
testcase_36 | AC | 290 ms
9,016 KB |
testcase_37 | AC | 287 ms
9,268 KB |
testcase_38 | AC | 301 ms
9,276 KB |
testcase_39 | AC | 310 ms
9,148 KB |
testcase_40 | AC | 311 ms
9,152 KB |
testcase_41 | AC | 14 ms
9,280 KB |
testcase_42 | AC | 14 ms
9,196 KB |
testcase_43 | AC | 19 ms
9,272 KB |
testcase_44 | AC | 20 ms
9,152 KB |
testcase_45 | AC | 2 ms
5,376 KB |
testcase_46 | AC | 2 ms
5,376 KB |
testcase_47 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; template<class T> istream& operator >> (istream& is, vector<T>& vec) { for(T& x : vec) is >> x; return is; } 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++; } }; template <class Cap> struct mf_graph { public: mf_graph() : _n(0) {} 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())}); g[from].push_back(_edge{to, int(g[to].size()), cap}); g[to].push_back(_edge{from, int(g[from].size()) - 1, 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); std::vector<int> level(_n), iter(_n); 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) break; } return res; }; Cap flow = 0; while (flow < flow_limit) { bfs(); if (level[t] == -1) break; std::fill(iter.begin(), iter.end(), 0); while (flow < flow_limit) { 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); 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; }; int main(){ ios::sync_with_stdio(false); cin.tie(0); int h, w; cin >> h >> w; vector<vector<int>> G(h, vector<int>(w)); vector<int> R(h), C(w); cin >> G >> R >> C; mf_graph<ll> g(h + w + 2); int src = h + w, sink = src + 1; ll ans = 0; for(int y = 0; y < h; y++){ ll s = accumulate(G[y].begin(), G[y].end(), 0ll); ll mn = min((ll)(R[y]), s); ans += R[y] - mn; g.add_edge(src, y, s - mn); for(int x = 0; x < w; x++){ g.add_edge(y, x + h, G[y][x]); } } for(int x = 0; x < w; x++){ g.add_edge(x + h, sink, C[x]); ans += C[x]; } ans -= g.flow(src, sink); cout << ans << '\n'; }