結果
問題 | No.798 コレクション |
ユーザー | kyort0n |
提出日時 | 2019-03-15 22:19:41 |
言語 | C++11 (gcc 11.4.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,448 bytes |
コンパイル時間 | 1,544 ms |
コンパイル使用メモリ | 174,060 KB |
実行使用メモリ | 121,936 KB |
最終ジャッジ日時 | 2024-07-01 21:07:52 |
合計ジャッジ時間 | 5,641 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 | 14 ms
27,264 KB |
testcase_01 | AC | 13 ms
21,832 KB |
testcase_02 | AC | 18 ms
21,888 KB |
testcase_03 | AC | 15 ms
21,804 KB |
testcase_04 | AC | 14 ms
21,916 KB |
testcase_05 | AC | 14 ms
21,916 KB |
testcase_06 | AC | 14 ms
21,872 KB |
testcase_07 | AC | 16 ms
21,888 KB |
testcase_08 | AC | 17 ms
21,888 KB |
testcase_09 | AC | 19 ms
21,892 KB |
testcase_10 | AC | 19 ms
21,848 KB |
testcase_11 | AC | 16 ms
21,888 KB |
testcase_12 | AC | 15 ms
21,836 KB |
testcase_13 | TLE | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
ソースコード
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<ll, ll> l_l; #define EPS (1e-7) //#define INF (1e9) #define PI (acos(-1)) //const ll mod = 1000000007; 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() { //cout.precision(10); cin.tie(0); ios::sync_with_stdio(false); ll n; cin >> n; ll MAX_DAY = n - n / 3; PrimalDual<ll, ll> field(4e5); for(ll day = 0; day < MAX_DAY; day++) { field.add_edge(0, 1e5 + day, 1, 0); } for(ll item = 1; item <= n; item++) { ll a, b; cin >> a >> b; for(ll day = 0; day <= MAX_DAY; day++) { field.add_edge(1e5+day, 2e5+item, 1, a+b*day); } field.add_edge(2e5+item, 3e5, 1, 0); } cout << field.min_cost_flow(0, 3e5, MAX_DAY) << endl; return 0; }