結果
問題 | No.1288 yuki collection |
ユーザー | ei1333333 |
提出日時 | 2020-09-25 01:21:21 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 392 ms / 5,000 ms |
コード長 | 5,113 bytes |
コンパイル時間 | 2,415 ms |
コンパイル使用メモリ | 218,576 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-28 05:39:12 |
合計ジャッジ時間 | 9,533 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
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 | 3 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 266 ms
5,376 KB |
testcase_14 | AC | 265 ms
5,376 KB |
testcase_15 | AC | 214 ms
5,376 KB |
testcase_16 | AC | 213 ms
5,376 KB |
testcase_17 | AC | 271 ms
5,376 KB |
testcase_18 | AC | 272 ms
5,376 KB |
testcase_19 | AC | 270 ms
5,376 KB |
testcase_20 | AC | 271 ms
5,376 KB |
testcase_21 | AC | 260 ms
5,376 KB |
testcase_22 | AC | 258 ms
5,376 KB |
testcase_23 | AC | 260 ms
5,376 KB |
testcase_24 | AC | 278 ms
5,376 KB |
testcase_25 | AC | 273 ms
5,376 KB |
testcase_26 | AC | 272 ms
5,376 KB |
testcase_27 | AC | 143 ms
5,376 KB |
testcase_28 | AC | 162 ms
5,376 KB |
testcase_29 | AC | 143 ms
5,376 KB |
testcase_30 | AC | 12 ms
5,376 KB |
testcase_31 | AC | 17 ms
5,376 KB |
testcase_32 | AC | 18 ms
5,376 KB |
testcase_33 | AC | 154 ms
5,376 KB |
testcase_34 | AC | 253 ms
5,376 KB |
testcase_35 | AC | 242 ms
5,376 KB |
testcase_36 | AC | 392 ms
5,376 KB |
testcase_37 | AC | 359 ms
5,376 KB |
testcase_38 | AC | 173 ms
5,376 KB |
testcase_39 | AC | 133 ms
5,376 KB |
testcase_40 | AC | 5 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using int64 = long long; const int mod = 1e9 + 7; // const int mod = 998244353; const int64 infll = (1LL << 62) - 1; const int inf = (1 << 30) - 1; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup; template< typename T1, typename T2 > ostream &operator<<(ostream &os, const pair< T1, T2 > &p) { os << p.first << " " << p.second; return os; } template< typename T1, typename T2 > istream &operator>>(istream &is, pair< T1, T2 > &p) { is >> p.first >> p.second; return is; } template< typename T > ostream &operator<<(ostream &os, const vector< T > &v) { for(int i = 0; i < (int) v.size(); i++) { os << v[i] << (i + 1 != v.size() ? " " : ""); } return os; } template< typename T > istream &operator>>(istream &is, vector< T > &v) { for(T &in : v) is >> in; return is; } template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); } template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); } template< typename T = int64 > vector< T > make_v(size_t a) { return vector< T >(a); } template< typename T, typename... Ts > auto make_v(size_t a, Ts... ts) { return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...)); } template< typename T, typename V > typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) { t = v; } template< typename T, typename V > typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) { for(auto &e : t) fill_v(e, v); } template< typename F > struct FixPoint : F { FixPoint(F &&f) : F(forward< F >(f)) {} template< typename... Args > decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, forward< Args >(args)...); } }; template< typename F > inline decltype(auto) MFP(F &&f) { return FixPoint< F >{forward< F >(f)}; } template< typename flow_t, typename cost_t > struct PrimalDual { const cost_t INF; struct edge { int to; flow_t cap; cost_t cost; int rev; bool isrev; }; vector< vector< edge > > graph; vector< cost_t > potential, min_cost; vector< int > prevv, preve; PrimalDual(int V) : graph(V), INF(numeric_limits< cost_t >::max()) {} void add_edge(int from, int to, flow_t cap, cost_t cost) { graph[from].emplace_back((edge) {to, cap, cost, (int) graph[to].size(), false}); graph[to].emplace_back((edge) {from, 0, -cost, (int) graph[from].size() - 1, true}); } cost_t min_cost_flow(int s, int t, flow_t f) { int V = (int) graph.size(); cost_t ret = 0; using Pi = pair< cost_t, int >; priority_queue< Pi, vector< Pi >, greater< Pi > > que; potential.assign(V, 0); preve.assign(V, -1); prevv.assign(V, -1); while(f > 0) { min_cost.assign(V, INF); que.emplace(0, s); min_cost[s] = 0; while(!que.empty()) { Pi p = que.top(); que.pop(); if(min_cost[p.second] < p.first) continue; for(int i = 0; i < graph[p.second].size(); i++) { edge &e = graph[p.second][i]; cost_t nextCost = min_cost[p.second] + e.cost + potential[p.second] - potential[e.to]; if(e.cap > 0 && min_cost[e.to] > nextCost) { min_cost[e.to] = nextCost; prevv[e.to] = p.second, preve[e.to] = i; que.emplace(min_cost[e.to], e.to); } } } if(min_cost[t] == INF) return -1; for(int v = 0; v < V; v++) potential[v] += min_cost[v]; flow_t addflow = f; for(int v = t; v != s; v = prevv[v]) { addflow = min(addflow, graph[prevv[v]][preve[v]].cap); } f -= addflow; ret += addflow * potential[t]; for(int v = t; v != s; v = prevv[v]) { edge &e = graph[prevv[v]][preve[v]]; e.cap -= addflow; graph[v][e.rev].cap += addflow; } } return ret; } 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 << "/" << rev_e.cap + e.cap << ")" << endl; } } } }; int main() { int N; cin >> N; string S; cin >> S; vector< int > V(N); cin >> V; PrimalDual< int64, int64 > flow(N + N + N + 2); int X = N + N + N; int Y = N + N + N + 1; for(int i = 1; i < N; i++) { flow.add_edge(i - 1, i, flow.INF, 0); flow.add_edge(i - 1 + N, i + N, flow.INF, 0); flow.add_edge(i - 1 + N + N, i + N + N, flow.INF, 0); } for(int i = 0; i < N; i++) { if(S[i] == 'y') flow.add_edge(X, i, 1, inf - V[i]); else if(S[i] == 'u') flow.add_edge(i, i + N, 1, inf - V[i]); else if(S[i] == 'k') flow.add_edge(i + N, i + N + N, 1, inf - V[i]); else flow.add_edge(i + N + N, Y, 1, inf - V[i]); } flow.add_edge(X, Y, N / 4, inf * 4LL); cout << inf * 4LL * (N / 4) - flow.min_cost_flow(X, Y, N / 4) << "\n"; }