結果
問題 | No.957 植林 |
ユーザー | outline |
提出日時 | 2021-02-28 19:09:10 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,827 bytes |
コンパイル時間 | 1,765 ms |
コンパイル使用メモリ | 154,488 KB |
実行使用メモリ | 33,948 KB |
最終ジャッジ日時 | 2024-10-02 21:52:57 |
合計ジャッジ時間 | 7,865 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 102 ms
29,276 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | AC | 110 ms
31,888 KB |
testcase_15 | WA | - |
testcase_16 | AC | 81 ms
25,888 KB |
testcase_17 | AC | 87 ms
27,376 KB |
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 | 49 ms
33,436 KB |
testcase_42 | AC | 48 ms
33,432 KB |
testcase_43 | AC | 64 ms
33,820 KB |
testcase_44 | AC | 68 ms
33,820 KB |
testcase_45 | AC | 2 ms
5,248 KB |
testcase_46 | AC | 2 ms
5,248 KB |
testcase_47 | AC | 2 ms
5,248 KB |
ソースコード
#include <iostream> #include <vector> #include <algorithm> #include <cmath> #include <queue> #include <string> #include <map> #include <set> #include <stack> #include <tuple> #include <deque> #include <array> #include <numeric> #include <bitset> #include <iomanip> #include <cassert> #include <chrono> #include <random> #include <limits> #include <iterator> #include <functional> #include <sstream> #include <fstream> #include <complex> #include <cstring> #include <unordered_map> #include <unordered_set> using namespace std; using ll = long long; constexpr int INF = 1001001001; constexpr int mod = 1000000007; // constexpr int mod = 998244353; template<class T> inline bool chmax(T& x, T y){ if(x < y){ x = y; return true; } return false; } template<class T> inline bool chmin(T& x, T y){ if(x > y){ x = y; return true; } return false; } 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(){ ios::sync_with_stdio(false); cin.tie(nullptr); int H, W; cin >> H >> W; vector<vector<ll>> G(H, vector<ll>(W)); int s = H * W + H + W, t = s + 1, V = s + 2; PushRelabel<ll> g(V); ll ans = 0; for(int i = 0; i < H; ++i){ for(int j = 0; j < W; ++j){ cin >> G[i][j]; int v = i * W + j; g.add_edge(v, t, G[i][j]); int w = H * W + i, x = H * W + H + j; g.add_edge(w, v, INF); g.add_edge(x, v, INF); } } vector<ll> R(H), C(W); for(int i = 0; i < H; ++i){ cin >> R[i]; ans += R[i]; int v = H * W + i; g.add_edge(s, v, R[i]); } for(int i = 0; i < W; ++i){ cin >> C[i]; ans += C[i]; int v = H * W + H + i; g.add_edge(s, v, C[i]); } ans -= g.max_flow(s, t); cout << ans << endl; return 0; }