結果
問題 |
No.1607 Kth Maximum Card
|
ユーザー |
|
提出日時 | 2025-01-24 16:47:55 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2,822 ms / 3,500 ms |
コード長 | 8,937 bytes |
コンパイル時間 | 6,800 ms |
コンパイル使用メモリ | 332,716 KB |
実行使用メモリ | 59,748 KB |
最終ジャッジ日時 | 2025-01-24 16:48:33 |
合計ジャッジ時間 | 32,372 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 33 |
ソースコード
#include<bits/stdc++.h> #include<atcoder/all> using namespace std; namespace my{ #define eb emplace_back #define LL(...) ll __VA_ARGS__;lin(__VA_ARGS__) #define VV(n,...) vec<ll>__VA_ARGS__;setsize({n},__VA_ARGS__);vin(__VA_ARGS__) #define FO(n) for(ll ij=n;ij-->0;) #define FOR(i,...) for(auto[i,i##stop,i##step]=range(0,__VA_ARGS__);i<i##stop;i+=i##step) #define fo(i,...) FO##__VA_OPT__(R)(i __VA_OPT__(,__VA_ARGS__)) #define fe(a,i,...) for(auto&&__VA_OPT__([)i __VA_OPT__(,__VA_ARGS__]):a) #define single_testcase void solve();}int main(){my::io();my::solve();}namespace my{ void io(){cin.tie(nullptr)->sync_with_stdio(0);cout<<fixed<<setprecision(15);} using ld=long double; using ll=long long; constexpr auto range(bool s,auto...a){array<ll,3>r{0,0,1};ll I=0;((r[I++]=a),...);if(!s&&I==1)swap(r[0],r[1]);r[0]-=s;if(s)r[2]*=-1;return r;} constexpr ld ee=1e-12; constexpr char newline=10; constexpr char space=32; constexpr auto abs(auto x){return x<0?-x:x;} bool amin(auto&a,const auto&b){return b<a?a=b,1:0;} auto max(auto...a){return max(initializer_list<common_type_t<decltype(a)...>>{a...});} template<class A,class B>struct pair{ A a;B b; pair()=default; pair(A a,B b):a(a),b(b){} pair(const std::pair<A,B>&p):a(p.first),b(p.second){} auto operator<=>(const pair&)const=default; pair operator+(const pair&p)const{return{a+p.a,b+p.b};} friend istream&operator>>(istream&i,pair&p){return i>>p.a>>p.b;} friend ostream&operator<<(ostream&o,const pair&p){return o<<p.a<<space<<p.b;} }; template<class T,class U>ostream&operator<<(ostream&o,const std::pair<T,U>&p){return o<<p.first<<space<<p.second;} template<class T>struct queue:std::queue<T>{ queue(const initializer_list<T>&a={}){fe(a,e)this->emplace(e);} queue(const vector<T>&a){fe(a,e)this->emplace(e);} ll size()const{return std::queue<T>::size();} T pop(){T r=this->front();std::queue<T>::pop();return r;} friend ostream&operator<<(ostream&o,queue q){while(q.size())o<<q.pop()<<string(q.size()>0,space);return o;} }; template<class T>struct deque:std::deque<T>{ deque(const initializer_list<T>&a={}){fe(a,e)this->eb(e);} deque(const vector<T>&a){fe(a,e)this->eb(e);} ll size()const{return std::deque<T>::size();} T pop_front(){T r=this->front();std::deque<T>::pop_front();return r;} friend ostream&operator<<(ostream&o,const deque&q){fe(q,e)o<<e<<string(&e!=&q.back(),space);return o;} }; template<ll k>auto pack_kth(const auto&...a){return get<k>(make_tuple(a...));} template<class T,size_t...I>auto pack_slice_impl(index_sequence<I...>, const auto&...a){return array<T,sizeof...(I)>{get<I>(forward_as_tuple(a...))...};} template<class T,size_t n>auto pack_slice(const auto&...a){return pack_slice_impl<T>(make_index_sequence<n>{},a...);} template<class V>concept vectorial=is_base_of_v<vector<typename V::value_type>,V>; template<class T>struct vec_attr{using core_type=T;static constexpr int rank=0;}; template<vectorial V>struct vec_attr<V>{using core_type=typename vec_attr<typename V::value_type>::core_type;static constexpr int rank=vec_attr<typename V::value_type>::rank+1;}; template<class T>using core_t=vec_attr<T>::core_type; template<class V>istream&operator>>(istream&i,vector<V>&v){fe(v,e)i>>e;return i;} template<class V>ostream&operator<<(ostream&o,const vector<V>&v){fe(v,e)o<<e<<string(&e!=&v.back(),vectorial<V>?newline:space);return o;} template<class V>struct vec:vector<V>{ using vector<V>::vector; vec(const vector<V>&v){vector<V>::operator=(v);} template<class...A>requires(sizeof...(A)>=3)vec(A...a){const ll n=sizeof...(a)-1;auto t=pack_slice<ll,n>(a...);ll s[n];fo(i,n)s[i]=t[i];*this=make_vec(s,pack_kth<n>(a...));} template<class T,ll n,ll i=0>static auto make_vec(const ll(&s)[n],T x){if constexpr(i==n-1)return vec<T>(s[i],x);else{auto X=make_vec<T,n,i+1>(s,x);return vec<decltype(X)>(s[i],X);}} vec&operator^=(const vec&u){this->insert(this->end(),u.begin(),u.end());return*this;} vec operator^(const vec&u)const{return vec{*this}^=u;} vec&operator+=(const vec&u){vec&v=*this;fo(i,v.size())v[i]+=u[i];return v;} vec&operator-=(const vec&u){vec&v=*this;fo(i,v.size())v[i]-=u[i];return v;} vec operator+(const vec&u)const{return vec{*this}+=u;} vec operator-(const vec&u)const{return vec{*this}-=u;} vec&operator++(){fe(*this,e)++e;return*this;} vec&operator--(){fe(*this,e)--e;return*this;} vec operator-()const{vec v=*this;fe(v,e)e=-e;return v;} ll size()const{return vector<V>::size();} void emplace_front(const V&x={}){this->emplace(this->begin(),x);} auto pop_front(){auto r=*this->begin();this->erase(this->begin());return r;} auto scan(const auto&f)const{pair<core_t<V>,bool>r{};fe(*this,e)if constexpr(!vectorial<V>)r.b?f(r.a,e),r:r={e,1};else if(auto s=e.scan(f);s.b)r.b?f(r.a,s.a),r:r=s;return r;} auto max()const{return scan([](auto&a,const auto&b){a<b?a=b:0;}).a;} }; template<ll rank,class T>struct tensor_helper{using type=vec<typename tensor_helper<rank-1,T>::type>;}; template<class T>struct tensor_helper<0,T>{using type=T;}; template<ll rank,class T>using tensor=typename tensor_helper<rank,T>::type; template<class...A>requires(sizeof...(A)>=2)vec(A...a)->vec<tensor<sizeof...(a)-2,remove_reference_t<decltype(get<sizeof...(a)-1>(declval<tuple<A...>>()))>>>; vec(ll)->vec<ll>; template<ll n,class...A>void setsize(const ll(&l)[n],A&...a){((a=vec<void*>::make_vec(l,core_t<A>{})),...);} template<bool is_negative=false>struct infinity{ template<integral T>constexpr operator T()const{return numeric_limits<T>::max()*(1-is_negative*2);} template<floating_point T>constexpr operator T()const{return static_cast<ll>(*this);} template<class T>constexpr bool operator==(T x)const{return static_cast<T>(*this)==x;} constexpr auto operator-()const{return infinity<!is_negative>();} }; constexpr infinity oo; void lin(auto&...a){(cin>>...>>a);} void vin(auto&...a){fo(i,(a.size()&...))(cin>>...>>a[i]);} template<char c=space>void pp(const auto&...a){ll n=sizeof...(a);((cout<<a<<string(--n>0,c)),...);cout<<newline;} void dec(auto&...a){((--a),...);} template<class T>auto binary_search(const auto&f,T o,T x){ if(is_floating_point_v<T>)fo(log2((abs(o-x)/ee))+6)(f((o+x)/2)?o:x)=(o+x)/2; else while(abs(o-x)>1)(f((o+x)/2)?o:x)=(o+x)/2; return o; } auto binary_searchll(auto f,ll o,ll x){return binary_search<ll>(f,o,x);} template<class WT>struct edge{ ll from,to; WT wt; ll id; edge()=default; edge(ll from,ll to,WT wt=1,ll id=-1):from(from),to(to),wt(wt),id(id){} auto operator<=>(const edge&e)const{return wt<=>e.wt;} friend ostream&operator<<(ostream&o,const edge&e){return o<<"(to "<<e.to<<", wt "<<e.wt<<",id "<<e.id<<")";} }; template<class WT>struct graph{ vec<vec<edge<WT>>>edges; graph()=default; graph(ll n):edges(n){} decltype(auto)operator[](ll i){return edges[i];} decltype(auto)operator[](ll i)const{return edges[i];} ll size()const{return edges.size();} friend ostream&operator<<(ostream&o,const graph&g){ fo(u,g.size()){ o<<"from "<<u<<": "; fo(j,g[u].size())o<<g[u][j]<<string(j!=g[u].size()-1,space); o<<newline; } return o; } void add_edges(const vec<ll>&p){fo(i,p.size())if(p[i]!=-1)edges[p[i]].eb(p[i],i,1,i);} void add_edges(const vec<ll>&a,const vec<ll>&b){fo(i,a.size())edges[a[i]].eb(a[i],b[i],1,i);} void add_edges(const vec<ll>&a,const vec<ll>&b,const vec<WT>&w){fo(i,a.size())edges[a[i]].eb(a[i],b[i],w[i],i);} void add_edges(const vec<edge<WT>>&es){fe(es,e)edges[e.from].eb(e);} }; template<class WT>struct rooted_tree:graph<WT>{ vec<edge<WT>>rev_edge; ll r; rooted_tree(ll n,ll r):graph<WT>(n),rev_edge(n,{-1,-1,WT(),-1}),r(r){} void add_edge_and_set_rev_edge(const edge<WT>&e){ this->edges[e.from].eb(e); this->rev_edge[e.to]=e; } auto dist_enumerate()const{ vec<WT>res(this->size()); fe(bfs_order(),u)fe(this->edges[u],e)res[e.to]=res[u]+e.wt; return res; } auto bfs_order()const{ vec<ll>ord; queue<ll>q{r}; while(q.size()){ ll u=q.pop(); ord.eb(u); fe(this->edges[u],e)q.emplace(e.to); } return ord; } }; template<class WT>auto binary_bfs_tree(const graph<WT>&g,ll s){ rooted_tree<WT>tree(g.size(),s); vec<WT>dist(g.size(),oo); dist[s]=WT{}; vec<bool>used(g.size()); deque<edge<WT>>q{{-1,s,WT{},-1}}; while(q.size()){ auto pu=q.pop_front(); ll u=pu.to; if(used[u])continue; used[u]=1; if(pu.from!=-1)tree.add_edge_and_set_rev_edge(pu); fe(g[u],e){ if(amin(dist[e.to],dist[u]+e.wt)){ assert(!used[e.to]); if(e.wt==WT{})q.emplace_front(e); else q.emplace_back(e); } } } return tree; } single_testcase void solve(){ LL(N,M,K); VV(M,a,b,c);dec(a,b); graph<ll>g(N); g.add_edges(a,b); g.add_edges(b,a); pp(binary_searchll([&](ll X){ fo(u,N)fe(g[u],e)e.wt=(c[e.id]>X); return binary_bfs_tree(g,0).dist_enumerate()[N-1]<K; },c.max(),-1)); }}