結果
問題 | No.654 Air E869120 |
ユーザー | fine |
提出日時 | 2019-12-22 18:36:51 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 54 ms / 2,000 ms |
コード長 | 8,047 bytes |
コンパイル時間 | 1,923 ms |
コンパイル使用メモリ | 180,596 KB |
実行使用メモリ | 69,888 KB |
最終ジャッジ日時 | 2024-09-14 14:11:08 |
合計ジャッジ時間 | 3,540 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 10 ms
5,376 KB |
testcase_11 | AC | 10 ms
5,376 KB |
testcase_12 | AC | 9 ms
5,376 KB |
testcase_13 | AC | 10 ms
5,376 KB |
testcase_14 | AC | 9 ms
5,376 KB |
testcase_15 | AC | 10 ms
5,504 KB |
testcase_16 | AC | 8 ms
5,376 KB |
testcase_17 | AC | 7 ms
5,376 KB |
testcase_18 | AC | 7 ms
5,376 KB |
testcase_19 | AC | 7 ms
5,376 KB |
testcase_20 | AC | 6 ms
5,376 KB |
testcase_21 | AC | 7 ms
5,376 KB |
testcase_22 | AC | 7 ms
5,376 KB |
testcase_23 | AC | 7 ms
5,376 KB |
testcase_24 | AC | 7 ms
5,376 KB |
testcase_25 | AC | 7 ms
5,376 KB |
testcase_26 | AC | 7 ms
5,376 KB |
testcase_27 | AC | 7 ms
6,272 KB |
testcase_28 | AC | 7 ms
6,400 KB |
testcase_29 | AC | 7 ms
6,272 KB |
testcase_30 | AC | 54 ms
69,868 KB |
testcase_31 | AC | 53 ms
69,704 KB |
testcase_32 | AC | 54 ms
69,800 KB |
testcase_33 | AC | 54 ms
69,888 KB |
testcase_34 | AC | 54 ms
69,876 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 2 ms
5,376 KB |
testcase_37 | AC | 2 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; // 以下のサイトのものをお借りしています。 // https://kopricky.github.io/code/Academic/max_flow_push_relabel.html class Stack { private: const int N, H; vector<int> node; public: Stack(const int N_, const int H_) : N(N_), H(H_), node(N+H){ clear(); } inline bool empty(const int h) const { return node[N+h] == N+h; } inline int top(const int h) const { return node[N+h]; } inline void pop(const int h){ node[N+h] = node[node[N+h]]; } inline void push(const int h, const int u){ node[u] = node[N+h], node[N+h] = u; } inline void clear(){ iota(node.begin() + N, node.end(), N); } }; class List { public: struct node { int prev, next; }; const int N, H; vector<node> dat; List(const int N_, const int H_) : N(N_), H(H_), dat(N+H){ clear(); } inline bool empty(const int h) const { return (dat[N+h].next == N+h); } inline bool more_one(const int h) const { return dat[N+h].prev != dat[N+h].next; } inline void insert(const int h, const int u){ dat[u].prev = dat[N+h].prev, dat[u].next = N+h; dat[dat[N+h].prev].next = u, dat[N+h].prev = u; } inline void erase(const int u){ dat[dat[u].prev].next = dat[u].next, dat[dat[u].next].prev = dat[u].prev; } inline void clear(){ for(int i = N; i < N+H; ++i) dat[i].prev = dat[i].next = i; } }; template <typename T> class PushRelabel { public: struct edge { const int to, rev; T cap; edge(const int to_, const int rev_, const T cap_) : to(to_), rev(rev_), cap(cap_){} }; private: const int V; int s, t, pot_max, checker; vector<T> excess; vector<int> potential, cur_edge, que; List all_ver; Stack act_ver; int calc_active(){ pot_max = -1; for(int i = 0; i < V; ++i){ if(potential[i] < V){ cur_edge[i] = 0; pot_max = max(potential[i], pot_max); all_ver.insert(potential[i], i); if(excess[i] > 0 && i != t) act_ver.push(potential[i], i); }else{ potential[i] = V+1; } } return pot_max; } void bfs(){ for(int i = 0; i < V; ++i) potential[i] = max(potential[i], V); potential[t] = 0; int qh = 0, qt = 0; for(que[qt++] = t; qh++ < qt;){ int u = que[qh - 1]; for(const edge& e : G[u]){ if(potential[e.to] == V && G[e.to][e.rev].cap > 0){ potential[e.to] = potential[u] + 1, que[qt++] = e.to; } } } } int init(){ potential[s] = V + 1; bfs(); for(edge& e : G[s]){ if(potential[e.to] < V){ G[e.to][e.rev].cap = e.cap, excess[s] -= e.cap, excess[e.to] += e.cap; e.cap = 0; } } return calc_active(); } int global_relabel(){ bfs(); all_ver.clear(), act_ver.clear(); return calc_active(); } void gap_relabel(const int u){ for(int i = potential[u]; i <= pot_max; ++i){ for(int id = all_ver.dat[V+i].next; id < V; id = all_ver.dat[id].next){ potential[id] = V + 1; } all_ver.dat[V+i].prev = all_ver.dat[V+i].next = V + i; } } int discharge(const int u){ for(int& i = cur_edge[u]; i < (int)G[u].size(); ++i){ edge& e = G[u][i]; if(potential[u] == potential[e.to] + 1 && e.cap > 0){ if(push(u, e)) return potential[u]; } } return relabel(u); } bool push(const int u, edge& e){ T f = min(e.cap, excess[u]); const int v = e.to; e.cap -= f, excess[u] -= f; G[v][e.rev].cap += f, excess[v] += f; if(excess[v] == f && v != t) act_ver.push(potential[v], v); return (excess[u] == 0); } int relabel(const int u){ ++checker; int prv = potential[u], cur = V; for(int i = 0; i < (int)G[u].size(); ++i){ const edge& e = G[u][i]; if(cur > potential[e.to] + 1 && e.cap > 0){ cur_edge[u] = i; cur = potential[e.to] + 1; } } if(all_ver.more_one(prv)){ all_ver.erase(u); if((potential[u] = cur) == V) return potential[u] = V+1, prv; act_ver.push(cur, u); all_ver.insert(cur, u); pot_max = max(pot_max, cur); }else{ gap_relabel(u); return pot_max = prv - 1; } return cur; } int validate_discharge(const int u){ for(int& i = cur_edge[u]; i < (int)G[u].size(); ++i){ edge& e = G[u][i]; if(potential[u] == potential[e.to] + 1 && e.cap > 0){ if(validate_push(u, e)) return potential[u] - V; } } return validate_relabel(u); } bool validate_push(const int u, edge& e){ T f = min(e.cap, excess[u]); const int v = e.to; e.cap -= f, excess[u] -= f; G[v][e.rev].cap += f, excess[v] += f; if(excess[v] == f) act_ver.push(potential[v] - V, v); return (excess[u] == 0); } int validate_relabel(const int u){ int cur = 2 * V; for(int i = 0; i < (int)G[u].size(); ++i){ const edge& e = G[u][i]; if(cur > potential[e.to] + 1 && e.cap > 0){ cur_edge[u] = i; cur = potential[e.to] + 1; } } potential[u] = cur; act_ver.push(cur - V, u); return cur - V; } void validate(){ for(int i = 0; i < V; ++i){ if(potential[i] >= V){ cur_edge[i] = 0, potential[i] = V; if(excess[i] > 0) act_ver.push(0, i); } } int level = 0; while(level >= 0){ if(act_ver.empty(level)){ --level; continue; } int u = act_ver.top(level); act_ver.pop(level); level = validate_discharge(u); } } public: vector<vector<edge> > G; PushRelabel(const int node_size) : V(node_size), pot_max(-1), checker(0), excess(V, (T)0), potential(V, 0), cur_edge(V), que(V), all_ver(V, V), act_ver(V, V), G(V){} void add_edge(const int from_, const int to_, const T cap_){ G[from_].emplace_back(to_, (int)G[to_].size(), cap_); G[to_].emplace_back(from_, (int)G[from_].size() - 1, 0); } T max_flow(const int source, const int sink){ s = source, t = sink; int level = init(); while(level >= 0){ if(act_ver.empty(level)){ --level; continue; } int u = act_ver.top(level); act_ver.pop(level); level = discharge(u); if(checker >= V / 2){ level = global_relabel(); checker = 0; } } // validate(); return excess[t]; } }; constexpr ll INF = 1e18; int u[1005], v[1005]; ll p[1005], q[1005], w[1005]; int main() { cin.tie(0); ios::sync_with_stdio(false); int n, m; ll d; cin >> n >> m >> d; for (int i = 0; i < m; i++) { cin >> u[i] >> v[i] >> p[i] >> q[i] >> w[i]; u[i]--; v[i]--; } PushRelabel<ll> dn(n * m + 2); for (int i = 1; i <= m; i++) dn.add_edge(0, i, INF); for (int i = 0; i < m; i++) { dn.add_edge(u[i] * m + i + 1, v[i] * m + i + 1, w[i]); for (int j = 0; j < m; j++) { if (v[j] == u[i] && q[j] + d <= p[i]) { dn.add_edge(v[j] * m + j + 1, u[i] * m + i + 1, w[j]); } } } for (int i = 1; i <= m; i++) { dn.add_edge((n - 1) * m + i, n * m + 1, INF); } cout << dn.max_flow(0, n * m + 1) << endl; return 0; }