結果
問題 | No.1216 灯籠流し/Lanterns |
ユーザー | beet |
提出日時 | 2020-09-01 22:44:04 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,194 ms / 4,500 ms |
コード長 | 8,758 bytes |
コンパイル時間 | 4,002 ms |
コンパイル使用メモリ | 256,048 KB |
実行使用メモリ | 34,732 KB |
最終ジャッジ日時 | 2024-04-30 21:51:42 |
合計ジャッジ時間 | 28,191 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 71 ms
19,200 KB |
testcase_05 | AC | 889 ms
29,780 KB |
testcase_06 | AC | 44 ms
6,940 KB |
testcase_07 | AC | 665 ms
22,100 KB |
testcase_08 | AC | 414 ms
13,872 KB |
testcase_09 | AC | 239 ms
13,916 KB |
testcase_10 | AC | 234 ms
11,524 KB |
testcase_11 | AC | 150 ms
16,048 KB |
testcase_12 | AC | 52 ms
15,488 KB |
testcase_13 | AC | 217 ms
23,168 KB |
testcase_14 | AC | 92 ms
15,744 KB |
testcase_15 | AC | 158 ms
16,452 KB |
testcase_16 | AC | 203 ms
24,960 KB |
testcase_17 | AC | 341 ms
10,688 KB |
testcase_18 | AC | 170 ms
15,664 KB |
testcase_19 | AC | 906 ms
26,852 KB |
testcase_20 | AC | 379 ms
21,912 KB |
testcase_21 | AC | 211 ms
19,292 KB |
testcase_22 | AC | 467 ms
16,060 KB |
testcase_23 | AC | 96 ms
23,288 KB |
testcase_24 | AC | 45 ms
6,944 KB |
testcase_25 | AC | 26 ms
6,944 KB |
testcase_26 | AC | 241 ms
10,496 KB |
testcase_27 | AC | 123 ms
16,256 KB |
testcase_28 | AC | 105 ms
19,712 KB |
testcase_29 | AC | 232 ms
23,808 KB |
testcase_30 | AC | 311 ms
19,792 KB |
testcase_31 | AC | 390 ms
14,544 KB |
testcase_32 | AC | 343 ms
24,848 KB |
testcase_33 | AC | 80 ms
15,488 KB |
testcase_34 | AC | 917 ms
30,732 KB |
testcase_35 | AC | 919 ms
34,368 KB |
testcase_36 | AC | 249 ms
29,632 KB |
testcase_37 | AC | 928 ms
30,476 KB |
testcase_38 | AC | 748 ms
29,968 KB |
testcase_39 | AC | 561 ms
29,460 KB |
testcase_40 | AC | 664 ms
31,400 KB |
testcase_41 | AC | 648 ms
31,400 KB |
testcase_42 | AC | 637 ms
31,404 KB |
testcase_43 | AC | 630 ms
31,304 KB |
testcase_44 | AC | 637 ms
31,404 KB |
testcase_45 | AC | 1,136 ms
34,728 KB |
testcase_46 | AC | 1,115 ms
34,660 KB |
testcase_47 | AC | 1,194 ms
34,728 KB |
testcase_48 | AC | 1,188 ms
34,732 KB |
testcase_49 | AC | 1,187 ms
34,728 KB |
ソースコード
#define PROBLEM "https://yukicoder.me/problems/4852" #include<bits/stdc++.h> using namespace std; #define call_from_test #ifndef call_from_test #include<bits/stdc++.h> using namespace std; #endif /* * @docs docs/binaryindexedtree.md */ //BEGIN CUT HERE template<typename T> struct BIT{ int n; vector<T> bit; // 1-indexed BIT(int n_):n(n_+1),bit(n+1,0){} T sum(int i){ T s(0); for(int x=i;x>0;x-=(x&-x)) s+=bit[x]; return s; } void add(int i,T a){ if(i==0) return; for(int x=i;x<=n;x+=(x&-x)) bit[x]+=a; } // [l, r) T query(int l,int r){ return sum(r-1)-sum(l-1); } int lower_bound(int w){ if(w<=0) return 0; int x=0,r=1; while(r<n) r<<=1; for(int k=r;k>0;k>>=1){ if(x+k<=n&&bit[x+k]<w){ w-=bit[x+k]; x+=k; } } return x+1; } // 0-indexed T sum0(int i){return sum(i+1);} void add0(int i,T a){add(i+1,a);} T query0(int l,int r){return sum(r)-sum(l);} }; //END CUT HERE #ifndef call_from_test signed main(){ return 0; } #endif #ifndef call_from_test #include <bits/stdc++.h> using namespace std; #endif //BEGIN CUT HERE template<typename TV, const int N> void read_tuple_impl(TV&) {} template<typename TV, const int N, typename Head, typename... Tail> void read_tuple_impl(TV& ts) { get<N>(ts).emplace_back(*(istream_iterator<Head>(cin))); read_tuple_impl<TV, N+1, Tail...>(ts); } template<typename... Ts> decltype(auto) read_tuple(size_t n) { tuple<vector<Ts>...> ts; for(size_t i=0;i<n;i++) read_tuple_impl<decltype(ts), 0, Ts...>(ts); return ts; } //END CUT HERE #ifndef call_from_test signed main(){ return 0; } #endif #ifndef call_from_test #include<bits/stdc++.h> using namespace std; #endif //BEGIN CUT HERE template<typename F> struct FixPoint : F{ FixPoint(F&& f):F(forward<F>(f)){} template<typename... Args> decltype(auto) operator()(Args&&... args) const{ return F::operator()(*this,forward<Args>(args)...); } }; template<typename F> inline decltype(auto) MFP(F&& f){ return FixPoint<F>{forward<F>(f)}; } //END CUT HERE #ifndef call_from_test //INSERT ABOVE HERE signed main(){ return 0; } #endif #ifndef call_from_test #include<bits/stdc++.h> using namespace std; #endif //BEGIN CUT HERE class EulerTourForVertex{ private: vector<int> ls,rs; int pos; void dfs(int v,int p){ ls[v]=pos++; for(int u:G[v]) if(u!=p) dfs(u,v); rs[v]=pos; } public: vector< vector<int> > G; EulerTourForVertex(){} EulerTourForVertex(int n):ls(n),rs(n),G(n){} void add_edge(int u,int v){ G[u].emplace_back(v); G[v].emplace_back(u); } void build(int r=0){ pos=0; dfs(r,-1); } int idx(int v){return ls[v];} template<typename F> void exec(int v,F f){ f(ls[v],rs[v]); } }; //END CUT HERE #ifndef call_from_test signed main(){ return 0; } #endif #ifndef call_from_test #include<bits/stdc++.h> using namespace std; #endif //BEGIN CUT HERE struct LowestCommonAncestor{ int n,h; vector< vector<int> > G,par; vector<int> dep; LowestCommonAncestor(){} LowestCommonAncestor(int n):n(n),G(n),dep(n){ h=1; while((1<<h)<=n) h++; par.assign(h,vector<int>(n,-1)); } void add_edge(int u,int v){ G[u].emplace_back(v); G[v].emplace_back(u); } void dfs(int v,int p,int d){ par[0][v]=p; dep[v]=d; for(int u:G[v]) if(u!=p) dfs(u,v,d+1); } void build(int r=0){ dfs(r,-1,0); for(int k=0;k+1<h;k++) for(int v=0;v<n;v++) if(~par[k][v]) par[k+1][v]=par[k][par[k][v]]; } int lca(int u,int v){ if(dep[u]>dep[v]) swap(u,v); for(int k=0;k<h;k++) if((dep[v]-dep[u])>>k&1) v=par[k][v]; if(u==v) return u; for(int k=h-1;k>=0;k--) if(par[k][u]!=par[k][v]) u=par[k][u],v=par[k][v]; return par[0][u]; } int distance(int u,int v){ return dep[u]+dep[v]-dep[lca(u,v)]*2; } }; //END CUT HERE #ifndef call_from_test signed main(){ return 0; } #endif #ifndef call_from_test #include<bits/stdc++.h> using namespace std; #define call_from_test #include "eulertourforvertex.cpp" #include "lowestcommonancestor.cpp" #undef call_from_test #endif /** * @see https://smijake3.hatenablog.com/entry/2019/09/15/200200 */ //BEGIN CUT HERE struct AuxiliaryTree : EulerTourForVertex{ using super = EulerTourForVertex; LowestCommonAncestor lca; vector<vector<int>> T; AuxiliaryTree(){} AuxiliaryTree(int n):super(n),lca(n),T(n){} void build(int r=0){ super::build(r); lca.G=super::G; lca.build(r); } void add_aux_edge(int u,int v){ T[u].emplace_back(v); T[v].emplace_back(u); } using super::idx; void query(vector<int> &vs){ assert(!vs.empty()); sort(vs.begin(),vs.end(), [&](int a,int b){return idx(a)<idx(b);}); vs.erase(unique(vs.begin(),vs.end()),vs.end()); int k=vs.size(); stack<int> st; st.emplace(vs[0]); for(int i=0;i+1<k;i++){ int w=lca.lca(vs[i],vs[i+1]); if(w!=vs[i]){ int l=st.top();st.pop(); while(!st.empty()&&lca.dep[w]<lca.dep[st.top()]){ add_aux_edge(st.top(),l); l=st.top();st.pop(); } if(st.empty()||st.top()!=w){ st.emplace(w); vs.emplace_back(w); } add_aux_edge(w,l); } st.emplace(vs[i+1]); } while(st.size()>1){ int c=st.top();st.pop(); add_aux_edge(st.top(),c); } } void clear(const vector<int> &ws){ for(int w:ws) T[w].clear(); } }; //END CUT HERE #ifndef call_from_test signed main(){ return 0; } #endif #ifndef call_from_test #include <bits/stdc++.h> using namespace std; #endif //BEGIN CUT HERE template<typename V> V compress(V vs){ sort(vs.begin(),vs.end()); vs.erase(unique(vs.begin(),vs.end()),vs.end()); return vs; } template<typename T> map<T, int> dict(const vector<T> &vs){ map<T, int> res; for(int i=0;i<(int)vs.size();i++) res[vs[i]]=i; return res; } map<char, int> dict(const string &s){ return dict(vector<char>(s.begin(),s.end())); } //END CUT HERE #ifndef call_from_test //INSERT ABOVE HERE signed main(){ return 0; } #endif #undef call_from_test #ifdef SANITIZE #define IGNORE #endif signed main(){ cin.tie(0); ios::sync_with_stdio(0); const char newl = '\n'; using ll = long long; using P = pair<int, ll>; int n,q; cin>>n>>q; vector<vector<P>> G(n+1); AuxiliaryTree H(n+1); for(int i=1;i<n;i++){ int a,b; ll c; cin>>a>>b>>c; G[a].emplace_back(b,c); G[b].emplace_back(a,c); H.add_edge(a,b); } // add 0 for root H.add_edge(0,1); H.build(0); const ll INF = 1e15; G[0].emplace_back(1,INF); vector<ll> dep(n+1); MFP([&](auto dfs,int v,int p,ll d)->void{ dep[v]=d; for(auto [u,c]:G[v]) if(u!=p) dfs(u,v,d+c); })(0,-1,0); auto [type,vs,ts,ls]=read_tuple<int, int, ll, ll>(q); // vanish vertices vector<int> rs(q); for(int i=0;i<q;i++){ if(type[i]!=0) continue; int r=vs[i]; ll d=dep[vs[i]]-ls[i]; for(int k=H.lca.h-1;k>=0;k--){ int p=H.lca.par[k][r]; if(~p and d<=dep[p]) r=p; } rs[i]=H.lca.par[0][r]; } vector<ll> pos; for(int i=0;i<q;i++) pos.emplace_back(ts[i]+dep[vs[i]]); pos=compress(pos); BIT<int> bit(pos.size()); vector<int> cs(q); for(int i=0;i<q;i++) cs[i]=lower_bound(pos.begin(),pos.end(),ts[i]+dep[vs[i]])-pos.begin(); queue<P> que; que.emplace(0,q); vector<int> ans(q); vector<vector<int>> add(n+1),sub(n+1),query(n+1); while(!que.empty()){ auto [L,R]=que.front();que.pop(); if(L+1==R) continue; int M=(L+R)>>1; vector<int> ss; for(int i=L;i<M;i++){ if(type[i]==0){ ss.emplace_back(vs[i]); ss.emplace_back(rs[i]); add[vs[i]].emplace_back(i); sub[rs[i]].emplace_back(i); } } for(int i=M;i<R;i++){ if(type[i]==1){ ss.emplace_back(vs[i]); query[vs[i]].emplace_back(i); } } ss.emplace_back(0); H.query(ss); auto expand=[&](int v){ for(int i:add[v]) bit.add0(cs[i],+1); for(int i:sub[v]) bit.add0(cs[i],-1); }; MFP([&](auto dfs,int v,int p)->void{ for(int i:query[v]) ans[i]-=bit.sum0(cs[i]); for(int u:H.T[v]) if(u!=p) dfs(u,v); expand(v); for(int i:query[v]) ans[i]+=bit.sum0(cs[i]); })(0,-1); H.clear(ss); for(int i=L;i<M;i++){ if(type[i]==0){ add[vs[i]].clear(); sub[rs[i]].clear(); } } for(int i=M;i<R;i++){ if(type[i]==1){ query[vs[i]].clear(); } } que.emplace(L,M); que.emplace(M,R); } for(int i=0;i<q;i++) if(type[i]==1) cout<<ans[i]<<newl; return 0; }