結果
問題 | No.1288 yuki collection |
ユーザー | ei1333333 |
提出日時 | 2020-09-25 02:06:24 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,056 bytes |
コンパイル時間 | 2,611 ms |
コンパイル使用メモリ | 216,460 KB |
実行使用メモリ | 57,472 KB |
最終ジャッジ日時 | 2024-06-28 05:41:38 |
合計ジャッジ時間 | 52,153 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 3 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 | 3 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 4 ms
5,376 KB |
testcase_13 | AC | 2,541 ms
33,884 KB |
testcase_14 | AC | 2,565 ms
34,564 KB |
testcase_15 | AC | 1,805 ms
29,056 KB |
testcase_16 | AC | 1,863 ms
29,568 KB |
testcase_17 | AC | 2,714 ms
33,920 KB |
testcase_18 | AC | 2,566 ms
34,688 KB |
testcase_19 | AC | 2,571 ms
33,800 KB |
testcase_20 | AC | 2,724 ms
35,200 KB |
testcase_21 | AC | 3,722 ms
47,232 KB |
testcase_22 | AC | 3,755 ms
46,904 KB |
testcase_23 | AC | 3,636 ms
47,104 KB |
testcase_24 | AC | 2,711 ms
34,464 KB |
testcase_25 | AC | 2,627 ms
35,328 KB |
testcase_26 | AC | 2,606 ms
34,560 KB |
testcase_27 | AC | 688 ms
20,460 KB |
testcase_28 | AC | 1,144 ms
28,416 KB |
testcase_29 | AC | 1,147 ms
31,116 KB |
testcase_30 | AC | 96 ms
32,384 KB |
testcase_31 | AC | 150 ms
33,152 KB |
testcase_32 | AC | 161 ms
32,512 KB |
testcase_33 | TLE | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
ソースコード
#include <bits/stdc++.h> using namespace std; 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); for(auto &v : V) cin >> v; PrimalDual< int64_t, int64_t > flow(N + N + 2); int X = N + N; int Y = X + 1; string tmp = "yuki"; for(int i = 0; i < N; i++) { flow.add_edge(2 * i, 2 * i + 1, 1, -V[i]); if(S[i] == 'i') { flow.add_edge(2 * i + 1, Y, 1, 0); } else { if(S[i] == 'y') { flow.add_edge(X, 2 * i, 1, 0); } int p = tmp.find(S[i]); for(int j = i + 1; j < N; j++) { if(tmp[p + 1] == S[j]) { flow.add_edge(2 * i + 1, 2 * j, 1, 0); } } } } flow.add_edge(X, Y, N / 4, 0); cout << -flow.min_cost_flow(X, Y, N / 4) << "\n"; }