Submission #724396

#	Time	Username	Problem	Language	Result	Execution time	Memory
724396		rrrr10000	Factories (JOI14_factories)	C++14	100 / 100	7696 ms	245440 KiB

factories

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n)  for(long long i=0;i<(long long)(n);i++)
#define REP(i,k,n) for(long long i=k;i<(long long)(n);i++)
#define pb emplace_back
#define lb(v,k) (lower_bound(all(v),(k))-v.begin())
#define ub(v,k) (upper_bound(all(v),(k))-v.begin())
#define fi first
#define se second
#define pi M_PI
#define PQ(T) priority_queue<T>
#define SPQ(T) priority_queue<T,vector<T>,greater<T>>
#define dame(a) {out(a);return 0;}
#define decimal cout<<fixed<<setprecision(15);
#define all(a) a.begin(),a.end()
#define rsort(a) {sort(all(a));reverse(all(a));}
#define dupli(a) {sort(all(a));a.erase(unique(all(a)),a.end());}
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> PP;
typedef tuple<ll,ll,ll,ll> PPP;
using vi=vector<ll>;
using vvi=vector<vi>;
using vvvi=vector<vvi>;
using vvvvi=vector<vvvi>;
using vp=vector<P>;
using vvp=vector<vp>;
using vb=vector<bool>;
using vvb=vector<vb>;
const ll inf=1001001001001001001;
const ll INF=1001001001;
const ll mod=998244353;
const double eps=1e-10;
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T> void out(T a){cout<<a<<'\n';}
template<class T> void outp(T a){cout<<'('<<a.fi<<','<<a.se<<')'<<'\n';}
template<class T> void outvp(T v){rep(i,v.size())cout<<'('<<v[i].fi<<','<<v[i].se<<')';cout<<'\n';}
template<class T> void outvvp(T v){rep(i,v.size())outvp(v[i]);}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<'\n';}
template<class T> void outvv(T v){rep(i,v.size())outv(v[i]);}
template<class T> bool isin(T x,T l,T r){return (l)<=(x)&&(x)<=(r);}
template<class T> void yesno(T b){if(b)out("yes");else out("no");}
template<class T> void YesNo(T b){if(b)out("Yes");else out("No");}
template<class T> void YESNO(T b){if(b)out("YES");else out("NO");}
template<class T> void outset(T s){auto itr=s.begin();while(itr!=s.end()){if(itr!=s.begin())cout<<' ';cout<<*itr;itr++;}cout<<'\n';}
void outs(ll a,ll b){if(a>=inf-100)out(b);else out(a);}
ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);}
ll modpow(ll a,ll b){ll res=1;a%=mod;while(b){if(b&1)res=res*a%mod;a=a*a%mod;b>>=1;}return res;}
#include "factories.h"
vvi table;
vi in,dep,dep2;
vi dis;
vvp G,g;
void Init(int n,int a[],int b[],int d[]){
    g=vvp(n);
    rep(i,n-1){
        g[a[i]].pb(b[i],d[i]);
        g[b[i]].pb(a[i],d[i]);
    }
    table=vvi(n,vi(20));dep=vi(n);dep2=vi(n);
    in=vi(n);
    ll c=0;
    function<void(ll,ll)> dfs=[&](ll i,ll p){
        in[i]=c++;
        table[i][0]=p;
        for(auto x:g[i])if(x.fi!=p){
            dep[x.fi]=dep[i]+1;dep2[x.fi]=dep2[i]+x.se;
            dfs(x.fi,i);
        }
    };dfs(0,-1);
    rep(k,19)rep(i,n)if(table[i][k]!=-1)table[i][k+1]=table[table[i][k]][k];
    G=vvp(n);dis=vi(n,inf);
}
bool comp(ll a,ll b){
    return in[a]<in[b];
}
ll lca(ll a,ll b){
    if(dep[a]>dep[b])swap(a,b);
    ll dif=dep[b]-dep[a];
    rep(i,20)if(dif>>i&1)b=table[b][i];
    if(a==b)return a;
    for(int i=19;i>=0;i--)if(table[a][i]!=table[b][i]){
        a=table[a][i];b=table[b][i];
    }
    return table[a][0];
}
ll Query(int s,int a[],int t,int b[]){
    vi al;
    rep(i,s)al.pb(a[i]);
    rep(i,t)al.pb(b[i]);
    sort(all(al),comp);
    rep(i,s+t-1)al.pb(lca(al[i],al[i+1]));
    sort(all(al),comp);
    al.erase(unique(all(al)),al.end());
    rep(i,al.size()-1){
        ll l=lca(al[i],al[i+1]),t=dep2[al[i+1]]-dep2[l];
        G[l].pb(al[i+1],t);
        G[al[i+1]].pb(l,t);
    }
    rep(i,s){
        dis[a[i]]=0;
    }
    auto dfs=[&](auto && self,ll i,ll p) -> void {
        for(auto x:G[i])if(x.fi!=p){
            self(self,x.fi,i);
            chmin(dis[i],dis[x.fi]+x.se);
        }
    };dfs(dfs,al[0],-1);
    auto dfs2=[&](auto && self,ll i,ll p) -> void {
        for(auto x:G[i])if(x.fi!=p){
            chmin(dis[x.fi],dis[i]+x.se);
            self(self,x.fi,i);
        }
    };dfs2(dfs2,al[0],-1);
    ll ans=inf;
    rep(i,t)chmin(ans,dis[b[i]]);
    for(ll x:al){
        G[x]=vp(0);
        dis[x]=inf;
    }
    return ans;
}

• Subtask 1: 15 / 15
• Subtask 2: 18 / 18
• Subtask 3: 67 / 67