結果
問題 | No.1288 yuki collection |
ユーザー | mugen_1337 |
提出日時 | 2020-11-28 20:44:20 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 448 ms / 5,000 ms |
コード長 | 4,479 bytes |
コンパイル時間 | 2,612 ms |
コンパイル使用メモリ | 221,632 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-13 01:37:53 |
合計ジャッジ時間 | 10,303 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 | 1 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,812 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 1 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 3 ms
6,944 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 290 ms
6,944 KB |
testcase_14 | AC | 293 ms
6,944 KB |
testcase_15 | AC | 232 ms
6,940 KB |
testcase_16 | AC | 232 ms
6,944 KB |
testcase_17 | AC | 293 ms
6,940 KB |
testcase_18 | AC | 297 ms
6,940 KB |
testcase_19 | AC | 297 ms
6,940 KB |
testcase_20 | AC | 298 ms
6,944 KB |
testcase_21 | AC | 287 ms
6,944 KB |
testcase_22 | AC | 285 ms
6,940 KB |
testcase_23 | AC | 285 ms
6,940 KB |
testcase_24 | AC | 304 ms
6,940 KB |
testcase_25 | AC | 299 ms
6,944 KB |
testcase_26 | AC | 300 ms
6,940 KB |
testcase_27 | AC | 159 ms
6,944 KB |
testcase_28 | AC | 183 ms
6,944 KB |
testcase_29 | AC | 159 ms
6,940 KB |
testcase_30 | AC | 13 ms
6,944 KB |
testcase_31 | AC | 18 ms
6,940 KB |
testcase_32 | AC | 20 ms
6,944 KB |
testcase_33 | AC | 168 ms
6,944 KB |
testcase_34 | AC | 275 ms
6,940 KB |
testcase_35 | AC | 262 ms
6,944 KB |
testcase_36 | AC | 448 ms
6,944 KB |
testcase_37 | AC | 409 ms
6,940 KB |
testcase_38 | AC | 196 ms
6,944 KB |
testcase_39 | AC | 145 ms
6,940 KB |
testcase_40 | AC | 5 ms
6,944 KB |
testcase_41 | AC | 2 ms
6,940 KB |
testcase_42 | AC | 2 ms
6,944 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define ALL(x) begin(x),end(x) #define rep(i,n) for(int i=0;i<(n);i++) #define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl; #define mod 1000000007 using ll=long long; const int INF=1000000000; const ll LINF=1001002003004005006ll; int dx[]={1,0,-1,0},dy[]={0,1,0,-1}; // ll gcd(ll a,ll b){return b?gcd(b,a%b):a;} template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;} template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return true;}return false;} #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") struct IOSetup{ IOSetup(){ cin.tie(0); ios::sync_with_stdio(0); cout<<fixed<<setprecision(12); } } iosetup; 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==(int)v.size()?"":" "); return os; } template<typename T> istream &operator>>(istream &is,vector<T>&v){ for(T &x:v)is>>x; return is; } template<typename flow_t, typename cost_t> struct PrimalDual{ struct edge{ int to; flow_t cap; cost_t cost; int rev;//この辺の逆辺がg[from]の何番目にあるか bool isrev; }; vector<vector<edge>> graph; vector<cost_t> potential,min_cost; vector<int> prevv,preve;//点,辺 const cost_t TINF; PrimalDual(int V):graph(V),TINF(numeric_limits<cost_t>::max()){} void add_edge(int from,int to,flow_t cap,cost_t cost){ graph[from].push_back((edge){to,cap,cost,(int)graph[to].size(),false}); graph[to].push_back((edge){from,0,-cost,(int)graph[from].size()-1,true}); } cost_t min_cost_flow(int s,int t,flow_t f,bool &ok){ 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,TINF); que.emplace(0,s); min_cost[s]=0; //dijkstraパート while(!que.empty()){ Pi p=que.top();que.pop(); if(min_cost[p.second]<p.first) continue; for(int i=0;i<(int)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 and 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]==TINF){ ok=false; return ret; } // dijkstraの結果に応じてpotentialを調節 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; } } ok=true; 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; } } } }; signed main(){ int n;cin>>n; string s;cin>>s; vector<ll> v(n); cin>>v; PrimalDual<ll,ll> flow(3*n+2); int src=3*n,sink=3*n+1; rep(i,n-1){ flow.add_edge(i,i+1,flow.TINF,0); flow.add_edge(i+n,i+1+n,flow.TINF,0); flow.add_edge(i+2*n,i+1+2*n,flow.TINF,0); } rep(i,n){ if(s[i]=='y') flow.add_edge(src,i,1,INF-v[i]); if(s[i]=='u') flow.add_edge(i,i+n,1,INF-v[i]); if(s[i]=='k') flow.add_edge(i+n,i+2*n,1,INF-v[i]); if(s[i]=='i') flow.add_edge(i+2*n,sink,1,INF-v[i]); } flow.add_edge(src,sink,flow.TINF,INF*4ll); bool ok; cout<<ll(INF)*4*n-flow.min_cost_flow(src,sink,n,ok)<<endl; return 0; }