結果
問題 | No.2205 Lights Out on Christmas Tree |
ユーザー | eQe |
提出日時 | 2024-12-03 14:20:47 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 149 ms / 2,000 ms |
コード長 | 6,425 bytes |
コンパイル時間 | 6,177 ms |
コンパイル使用メモリ | 327,024 KB |
実行使用メモリ | 65,052 KB |
最終ジャッジ日時 | 2024-12-03 14:21:00 |
合計ジャッジ時間 | 13,022 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
(要ログイン)
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 | 3 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 113 ms
64,872 KB |
testcase_12 | AC | 119 ms
65,012 KB |
testcase_13 | AC | 101 ms
65,052 KB |
testcase_14 | AC | 96 ms
65,040 KB |
testcase_15 | AC | 127 ms
54,856 KB |
testcase_16 | AC | 78 ms
38,376 KB |
testcase_17 | AC | 77 ms
38,376 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 128 ms
57,380 KB |
testcase_20 | AC | 140 ms
56,080 KB |
testcase_21 | AC | 142 ms
56,036 KB |
testcase_22 | AC | 99 ms
55,016 KB |
testcase_23 | AC | 126 ms
55,764 KB |
testcase_24 | AC | 132 ms
56,128 KB |
testcase_25 | AC | 149 ms
55,480 KB |
testcase_26 | AC | 119 ms
54,804 KB |
testcase_27 | AC | 115 ms
57,552 KB |
testcase_28 | AC | 102 ms
54,888 KB |
testcase_29 | AC | 100 ms
57,660 KB |
testcase_30 | AC | 123 ms
55,332 KB |
testcase_31 | AC | 113 ms
57,032 KB |
testcase_32 | AC | 119 ms
56,204 KB |
testcase_33 | AC | 118 ms
56,148 KB |
testcase_34 | AC | 132 ms
56,088 KB |
testcase_35 | AC | 124 ms
55,304 KB |
testcase_36 | AC | 121 ms
55,264 KB |
testcase_37 | AC | 121 ms
56,008 KB |
testcase_38 | AC | 121 ms
55,128 KB |
testcase_39 | AC | 117 ms
57,356 KB |
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 VL(n,...) vec<ll>__VA_ARGS__;setsize({n},__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--;) #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 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;return r;} constexpr char newline=10; constexpr char space=32; 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; friend ostream&operator<<(ostream&o,const pair&p){return o<<p.a<<space<<p.b;} }; auto&rev(auto&a){ranges::reverse(a);return a;} auto pop_front(auto&a){assert(a.size());auto r=*a.begin();a.pop_front();return r;} 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 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);} T sum()const{T r{};fe(*this,e)r+=e;return r;} friend ostream&operator<<(ostream&o,const deque&q){fe(q,e)o<<e<<string(&e!=&q.back(),space);return o;} }; 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 d=0;}; template<vectorial V>struct vec_attr<V>{using core_type=typename vec_attr<typename V::value_type>::core_type;static constexpr int d=vec_attr<typename V::value_type>::d+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);} 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;} 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 sum()const{return scan([](auto&a,const auto&b){a+=b;}).a;} void pop_front(){this->erase(this->begin());} }; template<class T=ll,size_t n,size_t i=0>auto make_vec(const ll(&s)[n],T x={}){if constexpr(n==i+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);}} template<ll n,class...A>void setsize(const ll(&l)[n],A&...a){((a=make_vec(l,core_t<A>())),...);} 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 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<<")";} }; 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; } template<class...A>void add_edge(ll a,A&&...b){edges[a].eb(a,std::forward<A>(b)...);} void add_edge(const edge<WT>&e){edges[e.from].eb(e);} 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; vec<ll>dep; vec<WT>dist; vec<ll>topological; ll r; rooted_tree(ll n,ll r):graph<WT>(n),rev_edge(n,{-1,-1,WT(),-1}),dep(n),dist(n),r(r){} ll par(ll u)const{return rev_edge[u].from;} ll root()const{return r;} void add_edge(const edge<WT>&e){ if(e.from!=-1){ graph<WT>::add_edge(e); dep[e.to]=dep[e.from]+1; dist[e.to]=dist[e.from]+e.wt; } rev_edge[e.to]=e; topological.eb(e.to); } }; template<class WT>auto bfs_tree(const graph<WT>&g,ll s=0){ rooted_tree<WT>bfs_tree(g.size(),s); vec<ll>used(g.size()); deque<edge<WT>>q{{-1,s,WT(),-1}}; while(q.size()){ auto pu=q.front();q.pop_front(); auto[p,u,w,_]=pu; if(used[u])continue; used[u]=1; bfs_tree.add_edge(pu); fe(g[u],e)if(!used[e.to])q.eb(e); } return bfs_tree; } template<class WT>auto bfs_tree(const rooted_tree<WT>&g){return bfs_tree(g,g.root());} single_testcase void solve(){ LL(N); VV(N-1,a,b);dec(a,b); VL(N,c); graph<ll>g(N); g.add_edges(a,b); g.add_edges(b,a); auto tree=bfs_tree(g); auto o=tree.topological; rev(o); ll ans=0; fe(o,v){ if(v==0)continue; if(c[v]==0){ c[v]^=1; c[tree.par(v)]^=1; ans++; } } pp(c.sum()==N?ans:-1); }}