結果
問題 | No.1676 Coin Trade (Single) |
ユーザー | momohara |
提出日時 | 2021-09-11 00:56:11 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 175 ms / 2,000 ms |
コード長 | 5,481 bytes |
コンパイル時間 | 2,466 ms |
コンパイル使用メモリ | 232,428 KB |
実行使用メモリ | 36,444 KB |
最終ジャッジ日時 | 2024-06-12 21:26:30 |
合計ジャッジ時間 | 6,287 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 121 ms
28,168 KB |
testcase_04 | AC | 112 ms
25,812 KB |
testcase_05 | AC | 101 ms
23,792 KB |
testcase_06 | AC | 103 ms
24,028 KB |
testcase_07 | AC | 83 ms
20,780 KB |
testcase_08 | AC | 49 ms
14,744 KB |
testcase_09 | AC | 85 ms
20,412 KB |
testcase_10 | AC | 89 ms
21,316 KB |
testcase_11 | AC | 127 ms
29,080 KB |
testcase_12 | AC | 69 ms
17,368 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 1 ms
6,940 KB |
testcase_15 | AC | 2 ms
6,940 KB |
testcase_16 | AC | 2 ms
6,944 KB |
testcase_17 | AC | 2 ms
6,944 KB |
testcase_18 | AC | 2 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,940 KB |
testcase_20 | AC | 2 ms
6,944 KB |
testcase_21 | AC | 2 ms
6,940 KB |
testcase_22 | AC | 1 ms
6,940 KB |
testcase_23 | AC | 2 ms
6,944 KB |
testcase_24 | AC | 1 ms
6,940 KB |
testcase_25 | AC | 2 ms
6,940 KB |
testcase_26 | AC | 2 ms
6,944 KB |
testcase_27 | AC | 2 ms
6,944 KB |
testcase_28 | AC | 2 ms
6,944 KB |
testcase_29 | AC | 2 ms
6,944 KB |
testcase_30 | AC | 1 ms
6,940 KB |
testcase_31 | AC | 2 ms
6,940 KB |
testcase_32 | AC | 2 ms
6,940 KB |
testcase_33 | AC | 163 ms
36,444 KB |
testcase_34 | AC | 169 ms
36,364 KB |
testcase_35 | AC | 175 ms
36,348 KB |
testcase_36 | AC | 171 ms
36,340 KB |
testcase_37 | AC | 172 ms
36,364 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using ull = unsigned long long; using ld = long double; using P = pair<ll, ll>; using tp = tuple<ll, ll, ll>; template <class T> using vec = vector<T>; template <class T> using vvec = vector<vec<T>>; #define all(hoge) (hoge).begin(), (hoge).end() #define en '\n' #define rep(i, m, n) for(ll i = (ll)(m); i < (ll)(n); ++i) #define rep2(i, m, n) for(ll i = (ll)(n)-1; i >= (ll)(m); --i) #define REP(i, n) rep(i, 0, n) #define REP2(i, n) rep2(i, 0, n) constexpr long long INF = 1LL << 60; constexpr int INF_INT = 1 << 25; constexpr long long MOD = (ll)1e9 + 7; //constexpr long long MOD = 998244353LL; static const ld pi = 3.141592653589793L; #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") template <class T> inline bool chmin(T &a, T b) { if(a > b) { a = b; return true; } return false; } template <class T> inline bool chmax(T &a, T b) { if(a < b) { a = b; return true; } return false; } //グラフ関連 struct Edge { int to, rev; ll cap; Edge(int _to, int _rev, ll _cap) : to(_to), rev(_rev), cap(_cap) {} }; typedef vector<Edge> Edges; typedef vector<Edges> Graph; void add_edge(Graph &G, int from, int to, ll cap, bool revFlag, ll revCap) { G[from].push_back(Edge(to, (int)G[to].size(), cap)); if(revFlag) G[to].push_back(Edge(from, (int)G[from].size() - 1, revCap)); } template <typename CapType, typename CostType> class MinCostFlowDAG { public: using Cat = CapType; using Cot = CostType; using pti = pair<Cot, int>; struct edge { int to, rev; Cat cap; Cot cost; }; const int V; const Cot inf; vector<vector<edge>> G; vector<Cot> h, dist; vector<int> deg, ord, prevv, preve; MinCostFlowDAG(const int node_size) : V(node_size), inf(numeric_limits<Cot>::max()), G(V), h(V, inf), dist(V), deg(V, 0), prevv(V), preve(V) {} void add_edge(const int from, const int to, const Cat cap, const Cot cost) { if(cap == 0) return; G[from].push_back((edge){to, (int)G[to].size(), cap, cost}); G[to].push_back((edge){from, (int)G[from].size() - 1, 0, -cost}); ++deg[to]; } bool tsort() { queue<int> que; for(int i = 0; i < V; ++i) { if(deg[i] == 0) que.push(i); } while(!que.empty()) { const int p = que.front(); que.pop(); ord.push_back(p); for(auto &e : G[p]) { if(e.cap > 0 && --deg[e.to] == 0) que.push(e.to); } } return (*max_element(deg.begin(), deg.end()) == 0); } void calc_potential(const int s) { h[s] = 0; for(const int v : ord) { if(h[v] == inf) continue; for(const edge &e : G[v]) { if(e.cap > 0) h[e.to] = min(h[e.to], h[v] + e.cost); } } } void Dijkstra(const int s) { priority_queue<pti, vector<pti>, greater<pti>> que; fill(dist.begin(), dist.end(), inf); dist[s] = 0; que.push(pti(0, s)); while(!que.empty()) { pti p = que.top(); que.pop(); const int v = p.second; if(dist[v] < p.first) continue; for(int i = 0; i < (int)G[v].size(); ++i) { edge &e = G[v][i]; if(e.cap > 0 && dist[e.to] > dist[v] + e.cost + h[v] - h[e.to]) { dist[e.to] = dist[v] + e.cost + h[v] - h[e.to]; prevv[e.to] = v, preve[e.to] = i; que.push(pti(dist[e.to], e.to)); } } } } void update(const int s, const int t, Cat &f, Cot &res) { for(int i = 0; i < V; i++) { if(dist[i] != inf) h[i] += dist[i]; } Cat d = f; for(int v = t; v != s; v = prevv[v]) { d = min(d, G[prevv[v]][preve[v]].cap); } f -= d; res += h[t] * d; for(int v = t; v != s; v = prevv[v]) { edge &e = G[prevv[v]][preve[v]]; e.cap -= d; G[v][e.rev].cap += d; } } Cot solve(const int s, const int t, Cat f) { if(!tsort()) assert(false); // not DAG calc_potential(s); Cot res = 0; while(f > 0) { Dijkstra(s); if(dist[t] == inf) return -inf; update(s, t, f, res); } return res; } }; void solve() { ll n, k; cin >> n >> k; MinCostFlowDAG<ll, ll> g(n * 2 + 2); int s = n * 2; int t = n * 2 + 1; REP(i, n) { ll a, m; cin >> a >> m; g.add_edge(i, i + n, k, a); REP(j, m) { ll b; cin >> b; b--; g.add_edge(b + n, i, 1, -a); } if(i != n - 1) g.add_edge(i, i + 1, k, 0); } g.add_edge(s, 0, k, 0); g.add_edge(n - 1, t, k, 0); cout << -g.solve(s, t, k) << en; } int main() { ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); //cout << fixed << setprecision(10); // ll t; // cin >> t; // REP(i, t - 1) { // solve(); // } solve(); return 0; }