結果
問題 | No.1545 [Cherry 2nd Tune N] Anthem |
ユーザー | kiyoshi0205 |
提出日時 | 2021-06-11 22:44:40 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 190 ms / 3,000 ms |
コード長 | 4,371 bytes |
コンパイル時間 | 3,599 ms |
コンパイル使用メモリ | 199,664 KB |
実行使用メモリ | 34,252 KB |
最終ジャッジ日時 | 2024-12-15 01:15:11 |
合計ジャッジ時間 | 14,638 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 67 |
コンパイルメッセージ
main.cpp: In function 'int main()': main.cpp:123:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions] 123 | for(auto [d,to]:g[j]){ | ^ main.cpp:151:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions] 151 | for(auto [d,x]:g[ans.back()]){ | ^
ソースコード
#pragma GCC target("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include<bits/stdc++.h> using namespace std; using ll=long long; using datas=pair<ll,ll>; using ddatas=pair<long double,long double>; using tdata=pair<ll,datas>; using vec=vector<ll>; using mat=vector<vec>; using pvec=vector<datas>; using pmat=vector<pvec>; #define For(i,a,b) for(i=a;i<(ll)b;++i) #define bFor(i,b,a) for(i=b,--i;i>=(ll)a;--i) #define rep(i,N) For(i,0,N) #define rep1(i,N) For(i,1,N) #define brep(i,N) bFor(i,N,0) #define brep1(i,N) bFor(i,N,1) #define all(v) (v).begin(),(v).end() #define allr(v) (v).rbegin(),(v).rend() #define vsort(v) sort(all(v)) #define vrsort(v) sort(allr(v)) #define uniq(v) vsort(v);(v).erase(unique(all(v)),(v).end()) #define endl "\n" #define popcount __builtin_popcountll #define eb emplace_back #define print(x) cout<<x<<endl #define printyes print("Yes") #define printno print("No") #define printYES print("YES") #define printNO print("NO") #define output(v) do{bool f=0;for(auto outi:v){cout<<(f?" ":"")<<outi;f=1;}cout<<endl;}while(0) #define matoutput(v) do{for(auto outimat:v)output(outimat);}while(0) constexpr ll mod=1000000007; // constexpr ll mod=998244353; constexpr ll inf=1LL<<60; constexpr long double eps=1e-9; const long double PI=acosl(-1); template<class T,class E> ostream& operator<<(ostream& os,const pair<T,E>& p){return os<<"("<<p.first<<","<<p.second<<")";} template<class T> ostream& operator<<(ostream& os,const vector<T>& v){ os<<"{";bool f=false; for(auto& x:v){if(f)os<<",";os<<x;f=true;} os<<"}"; return os; } template<class T> ostream& operator<<(ostream& os,const set<T>& v){ os<<"{";bool f=false; for(auto& x:v){if(f)os<<",";os<<x;f=true;} os<<"}"; return os; } template<class T> ostream& operator<<(ostream& os,const multiset<T>& v){ os<<"{";bool f=false; for(auto& x:v){if(f)os<<",";os<<x;f=true;} os<<"}"; return os; } template<class T,class E> ostream& operator<<(ostream& os,const map<T,E>& v){ os<<"{";bool f=false; for(auto& x:v){if(f)os<<",";os<<x;f=true;} os<<"}"; return os; } template<class T> inline bool chmax(T& a,const T b){bool x=a<b;if(x)a=b;return x;} template<class T> inline bool chmin(T& a,const T b){bool x=a>b;if(x)a=b;return x;} #ifdef DEBUG void debugg(){cout<<endl;} template<class T,class... Args>void debugg(const T& x,const Args&... args){cout<<" "<<x;debugg(args...);} #define debug(...) cout<<__LINE__<<" ["<<#__VA_ARGS__<<"]:",debugg(__VA_ARGS__) #else #define debug(...) (void(0)) #endif inline void startupcpp(void) noexcept{ cin.tie(0); ios::sync_with_stdio(false); cout<<fixed<<setprecision(15); } vector<ll> dijkstra(pmat& g,ll first){ priority_queue<datas,pvec,greater<datas>> que; que.emplace(0,first); vector<ll> dist(g.size(),inf); while(!que.empty()){ datas x=que.top();que.pop(); if(!chmin(dist[x.second],x.first))continue; for(auto next:g[x.second]){ next.first+=x.first; if(!chmin(dist[next.second],next.first+1))continue; que.emplace(next); } } return dist; } ll N,M,K,H,W,A,B,C,D; int main(){ startupcpp(); ll i,j; cin>>N>>A>>B>>K; --A;--B; vec x(N); rep(i,N){ cin>>x[i]; x[i]*=2; assert(x[i]>0); } cin>>M; pmat g(N),rg(N); rep(i,M){ ll a,b,c; cin>>a>>b>>c; assert(c>0); c*=2; --a;--b; g[a].emplace_back(c+(x[a]+x[b])/2,b); rg[b].emplace_back(c+(x[a]+x[b])/2,a); } mat dp(K,vec(N,inf)),bf(K,vec(N,inf)); dp[0][A]=x[A]/2; rep(i,K-1){ rep(j,N){ for(auto [d,to]:g[j]){ if(chmin(dp[i+1][to],dp[i][j]+d)){ assert(dp[i+1][to]<inf&&dp[i][j]<inf); bf[i+1][to]=j; } } } } auto dist=dijkstra(rg,B); vec anslist(N); rep(i,N)anslist[i]=dist[i]+dp[K-1][i]; i=min_element(all(anslist))-anslist.begin(); if(anslist[i]>=inf){ print("Impossible"); return 0; } assert(dist[i]<inf&&dp[K-1][i]<inf); print("Possible"); assert((anslist[i]+x[B]/2)%2==0); print((anslist[i]+x[B]/2)/2); vec ans(K); ans[K-1]=i; brep1(j,K){ // assert(dp[j][ans[j]]<inf); ans[j-1]=bf[j][ans[j]]; } // assert(ans[0]==A); while(ans.back()!=B){ for(auto [d,x]:g[ans.back()]){ if(dist[ans.back()]==dist[x]+d){ ans.emplace_back(x); break; } } } print(ans.size()); for(auto& x:ans)++x; output(ans); }