結果
問題 | No.957 植林 |
ユーザー | fine |
提出日時 | 2019-12-20 13:03:30 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,682 bytes |
コンパイル時間 | 1,827 ms |
コンパイル使用メモリ | 187,668 KB |
実行使用メモリ | 34,756 KB |
最終ジャッジ日時 | 2024-07-08 07:01:01 |
合計ジャッジ時間 | 6,040 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 1 ms
5,376 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | AC | 11 ms
9,728 KB |
testcase_42 | AC | 10 ms
9,600 KB |
testcase_43 | AC | 54 ms
34,436 KB |
testcase_44 | WA | - |
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< typename flow_t > struct PushRelabel { const flow_t INF; struct edge { int to; flow_t cap; int rev; bool isrev; int idx; }; vector< vector< edge > > graph; vector< flow_t > ex; int relabels, high; vector< int > cnt, h; vector< vector< int > > hs; PushRelabel(int V) : graph(V), INF(numeric_limits< flow_t >::max()), hs(V + 1), high(0) {} void add_edge(int from, int to, flow_t cap, int idx = -1) { graph[from].emplace_back((edge) {to, cap, (int) graph[to].size(), false, idx}); graph[to].emplace_back((edge) {from, 0, (int) graph[from].size() - 1, true, idx}); } void update_height(int idx, int nxt_height) { ++relabels; if(h[idx] != graph.size() + 1) { --cnt[h[idx]]; } h[idx] = nxt_height; if(h[idx] != graph.size() + 1) { high = nxt_height; ++cnt[nxt_height]; if(ex[idx] > 0) hs[nxt_height].emplace_back(idx); } } void global_relabel(int idx) { for(int i = 0; i <= high; i++) hs[i].clear(); relabels = 0; high = 0; h.assign(graph.size(), graph.size() + 1); cnt.assign(graph.size(), 0); queue< int > que; que.emplace(idx); h[idx] = 0; while(que.size()) { int p = que.front(); que.pop(); for(auto &e : graph[p]) { if(h[e.to] == graph.size() + 1 && graph[e.to][e.rev].cap > 0) { que.emplace(e.to); high = h[p] + 1; update_height(e.to, high); } } } } void push(int idx, edge &e) { if(h[e.to] == graph.size() + 1) return; if(ex[e.to] == 0) { hs[h[e.to]].emplace_back(e.to); } flow_t df = min(ex[idx], e.cap); e.cap -= df; graph[e.to][e.rev].cap += df; ex[idx] -= df; ex[e.to] += df; } void discharge(int idx) { int next_height = (int) graph.size() + 1; for(auto &&e : graph[idx]) { if(e.cap > 0) { if(h[idx] == h[e.to] + 1) { push(idx, e); if(ex[idx] <= 0) return; } else { next_height = min(next_height, h[e.to] + 1); } } } if(cnt[h[idx]] > 1) { update_height(idx, next_height); } else { for(; high >= h[idx]; hs[high--].clear()) { for(int j : hs[high]) update_height(j, graph.size() + 1); } } } flow_t max_flow(int s, int t) { ex.assign(graph.size(), 0); ex[s] = INF; ex[t] = -INF; global_relabel(t); for(auto &e : graph[s]) push(s, e); for(; high >= 0; high--) { while(!hs[high].empty()) { int idx = hs[high].back(); hs[high].pop_back(); discharge(idx); if(relabels >= graph.size() * 4) global_relabel(t); } } return ex[t] + INF; } void output() { for(int i = 0; i < graph.size(); i++) { for(auto &e : graph[i]) { if(e.isrev) continue; auto &rev_e = graph[e.to][e.rev]; cout << i << "->" << e.to << " (flow: " << rev_e.cap << "/" << e.cap + rev_e.cap << ")" << endl; } } } }; int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int H, W; cin >> H >> W; PushRelabel<ll> d(H * W + H + W + 2); int src = H * W + H + W; int dst = src + 1; vector< vector<ll> > g(H, vector<ll>(W)); for (int i = 0; i < H; ++i) { for (int j = 0; j < W; ++j) { cin >> g[i][j]; } } ll ans = 0; vector<int> used_h(H, false), used_w(W, false); for (int i = 0; i < H; ++i) { ll r; cin >> r; ll sum = 0; for (int j = 0; j < W; ++j) { sum += g[i][j]; } if (r >= sum) { ans += r - sum; used_h[i] = true; d.add_edge(src, H * W + i, d.INF); } else { d.add_edge(H * W + i, dst, sum - r); } } for (int j = 0; j < W; ++j) { ll c; cin >> c; ll sum = 0; for (int i = 0; i < H; ++i) { sum += g[i][j]; } if (c >= sum) { ans += c - sum; used_w[j] = true; d.add_edge(src, H * W + H + j, d.INF); } else { d.add_edge(H * W + H + j, dst, sum - c); } } for (int i = 0; i < H; ++i) { for (int j = 0; j < W; ++j) { ans += g[i][j]; if (used_h[i] && used_w[j]) continue; d.add_edge(src, i * W + j, g[i][j]); d.add_edge(i * W + j, H * W + i, d.INF); d.add_edge(i * W + j, H * W + H + j, d.INF); } } ans -= d.max_flow(src, dst); cout << ans << "\n"; return 0; }