結果
問題 | No.2642 Don't cut line! |
ユーザー | Taiki0715 |
提出日時 | 2024-02-19 23:11:14 |
言語 | C++17(clang) (17.0.6 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 234 ms / 4,000 ms |
コード長 | 6,018 bytes |
コンパイル時間 | 6,619 ms |
コンパイル使用メモリ | 185,192 KB |
実行使用メモリ | 50,072 KB |
最終ジャッジ日時 | 2024-09-29 03:39:02 |
合計ジャッジ時間 | 12,207 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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
6,820 KB |
testcase_01 | AC | 226 ms
49,172 KB |
testcase_02 | AC | 207 ms
50,072 KB |
testcase_03 | AC | 216 ms
44,308 KB |
testcase_04 | AC | 220 ms
44,056 KB |
testcase_05 | AC | 217 ms
46,476 KB |
testcase_06 | AC | 62 ms
6,820 KB |
testcase_07 | AC | 64 ms
6,820 KB |
testcase_08 | AC | 63 ms
6,816 KB |
testcase_09 | AC | 64 ms
6,816 KB |
testcase_10 | AC | 63 ms
6,816 KB |
testcase_11 | AC | 63 ms
6,816 KB |
testcase_12 | AC | 65 ms
6,816 KB |
testcase_13 | AC | 62 ms
6,816 KB |
testcase_14 | AC | 63 ms
6,820 KB |
testcase_15 | AC | 64 ms
6,820 KB |
testcase_16 | AC | 234 ms
46,992 KB |
testcase_17 | AC | 175 ms
41,304 KB |
testcase_18 | AC | 192 ms
40,572 KB |
testcase_19 | AC | 123 ms
34,312 KB |
testcase_20 | AC | 76 ms
14,956 KB |
testcase_21 | AC | 80 ms
9,472 KB |
testcase_22 | AC | 151 ms
37,056 KB |
testcase_23 | AC | 228 ms
45,396 KB |
testcase_24 | AC | 82 ms
19,732 KB |
testcase_25 | AC | 85 ms
18,344 KB |
testcase_26 | AC | 81 ms
9,600 KB |
testcase_27 | AC | 123 ms
30,832 KB |
testcase_28 | AC | 198 ms
42,488 KB |
testcase_29 | AC | 81 ms
12,416 KB |
testcase_30 | AC | 79 ms
17,008 KB |
testcase_31 | AC | 154 ms
36,864 KB |
testcase_32 | AC | 82 ms
14,208 KB |
testcase_33 | AC | 1 ms
6,820 KB |
testcase_34 | AC | 2 ms
6,816 KB |
testcase_35 | AC | 2 ms
6,816 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #if __has_include(<atcoder/all>) #include <atcoder/all> using namespace atcoder; template<int mod>istream &operator>>(istream &is,static_modint<mod> &a){long long b;is>>b;a=b;return is;} istream &operator>>(istream &is,modint &a){long long b;cin>>b;a=b;return is;} #endif #ifdef LOCAL #include "debug.h" #else #define debug(...) static_cast<void>(0) #define debugg(...) static_cast<void>(0) template<typename T1,typename T2>ostream &operator<<(ostream &os,const pair<T1,T2>&p){os<<p.first<<' '<<p.second;return os;} #endif using ll=long long; using ull=unsigned long long; using P=pair<ll,ll>; template<typename T>using minque=priority_queue<T,vector<T>,greater<T>>; template<typename T>bool chmax(T &a,const T &b){return (a<b?(a=b,true):false);} template<typename T>bool chmin(T &a,const T &b){return (a>b?(a=b,true):false);} template<typename T1,typename T2>istream &operator>>(istream &is,pair<T1,T2>&p){is>>p.first>>p.second;return is;} template<typename T>istream &operator>>(istream &is,vector<T> &a){for(auto &i:a)is>>i;return is;} template<typename T1,typename T2>void operator++(pair<T1,T2>&a,int n){a.first++,a.second++;} template<typename T1,typename T2>void operator--(pair<T1,T2>&a,int n){a.first--,a.second--;} template<typename T>void operator++(vector<T>&a,int n){for(auto &i:a)i++;} template<typename T>void operator--(vector<T>&a,int n){for(auto &i:a)i--;} #define reps(i,a,n) for(int i=(a);i<(n);i++) #define rep(i,n) reps(i,0,n) #define all(x) x.begin(),x.end() #define pcnt(x) __builtin_popcountll(x) ll myceil(ll a,ll b){return (a+b-1)/b;} template<typename T,size_t n,size_t id=0> auto vec(const int (&d)[n],const T &init=T()){ if constexpr (id<n)return vector(d[id],vec<T,n,id+1>(d,init)); else return init; } void SOLVE(); int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); #ifdef LOCAL clock_t start=clock(); #endif int testcase=1; //cin>>testcase; for(int i=0;i<testcase;i++){ SOLVE(); } #ifdef LOCAL cerr<<"time:"; cerr<<(clock()-start)/1000; cerr<<"ms\n"; #endif } struct HeavyLightDecomposition{ int n; vector<vector<int>>to; int root; vector<int>par,pathtop,in,out,dep; vector<int>sub; private: void st_dfs(int x,int p){ par[x]=p; sub[x]=1; for(auto &i:to[x]){ if(i==p){ if(i==to[x].back())break; else swap(i,to[x].back()); } st_dfs(i,x); sub[x]+=sub[i]; if(sub[i]>sub[to[x][0]]){ swap(i,to[x][0]); } } } void hld_dfs(int x,int p,int &id){ in[x]=id++; for(auto i:to[x])if(i!=p){ dep[i]=dep[x]+1; pathtop[i]=(i==to[x][0]?pathtop[x]:i); hld_dfs(i,x,id); } out[x]=id; } public: HeavyLightDecomposition(int n,int root=0):n(n),to(n),sub(n),par(n),in(n),out(n),root(root),pathtop(n),dep(n),g(n){} void add_edge(int u,int v){ to[u].emplace_back(v); to[v].emplace_back(u); } void build(){ dep[root]=0; st_dfs(root,-1); pathtop[root]=root; int id=0; hld_dfs(root,-1,id); } inline int get(int x)const{return in[x];} int lca(int u,int v)const{ int pu=pathtop[u],pv=pathtop[v]; while(pathtop[u]!=pathtop[v]){ if(in[pu]>in[pv])u=par[pu],pu=pathtop[u]; else v=par[pv],pv=pathtop[v]; } return (in[u]>in[v]?v:u); } void subtree_query(int u ,const function<void(int,int)> &f){ f(in[u],out[u]); } void path_query(int u,int v,const function<void(int,int)>&f){ int pu=pathtop[u],pv=pathtop[v]; while(pathtop[u]!=pathtop[v]){ if(in[u]>in[v])f(in[pu],in[u]+1),u=par[pu],pu=pathtop[u]; else f(in[pv],in[v]+1),v=par[pv],pv=pathtop[v]; } if(in[u]>in[v])swap(u,v); f(in[u],in[v]+1); } void noncommutative_path_query(int u,int v,const function<void(int,int)>&f){ int l=lca(u,v); while(pathtop[u]!=pathtop[l]){ f(in[u]+1,in[pathtop[u]]); u=par[pathtop[u]]; } if(u!=l)f(in[u]+1,in[l]+1); f(in[l],in[l]+1); if(v==l)return; vector<pair<int,int>>query; while(true){ if(pathtop[l]==pathtop[v]){ query.emplace_back(in[l]+1,in[v]+1); break; } query.emplace_back(in[pathtop[v]],in[v]+1); v=par[pathtop[v]]; } reverse(all(query)); for(auto [i,j]:query)f(i,j); } vector<vector<int>>g; int auxiliary_tree(vector<int>v){ sort(all(v),[&](int x,int y){return in[x]<in[y];}); v.reserve(v.size()*2-1); int vs=v.size(); reps(i,1,vs)v.push_back(lca(v[i-1],v[i])); sort(all(v),[&](int x,int y){return in[x]<in[y];}); v.erase(unique(all(v)),v.end()); rep(i,v.size())g[v[i]].clear(); stack<int>st; rep(i,v.size()){ while(!st.empty()&&out[st.top()]<=in[v[i]])st.pop(); if(!st.empty()){ g[st.top()].push_back(v[i]); g[v[i]].push_back(st.top()); } st.push(v[i]); } while(st.size()>1)st.pop(); return st.top(); } }; P op(P x,P y){ if(x.first!=y.first)return max(x,y); return min(x,y); } P e(){return {-1,0};} void SOLVE(){ int n,m; ll c; cin>>n>>m>>c; vector<int>u(m),v(m),w(m); vector<ll>p(m); rep(i,m){ cin>>u[i]>>v[i]>>w[i]>>p[i]; u[i]--,v[i]--; } vector<int>id(m); iota(all(id),0); sort(all(id),[&](int x,int y){return w[x]<w[y];}); HeavyLightDecomposition hld(n*2-1); int idx=n; ll cost=0,ur=0; dsu uf(n); vector<bool>used(m,false); for(int i:id){ if(uf.same(u[i],v[i]))continue; uf.merge(u[i],v[i]); hld.add_edge(u[i],idx); hld.add_edge(v[i],idx); idx++; cost+=w[i]; chmax(ur,p[i]); used[i]=true; } segtree<P,op,e>seg(n*2-1); idx=n; hld.build(); for(int i:id){ if(used[i]){ int j=hld.get(idx); seg.set(j,{w[i],p[i]}); } } ll ans=1e18; if(cost<=c)ans=ur; debug(ans); rep(i,m){ if(!used[i]){ auto er=e(); hld.path_query(u[i],v[i],[&](int l,int r){er=op(er,seg.prod(l,r));}); if(cost-er.first+w[i]<=c)chmax(ans,p[i]); } } if(ans==1e18)ans=-1; cout<<ans<<endl; }