結果
| 問題 |
No.898 tri-βutree
|
| コンテスト | |
| ユーザー |
t9unkubj
|
| 提出日時 | 2024-06-01 05:53:12 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 5,714 bytes |
| コンパイル時間 | 3,148 ms |
| コンパイル使用メモリ | 232,688 KB |
| 最終ジャッジ日時 | 2025-02-21 18:45:24 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | WA * 21 |
ソースコード
#ifdef t9unkubj
#include"template.h"
#else
#undef _GLIBCXX_DEBUG
#pragma GCC optimize("O3")
#define dbg(...) 199958
using namespace std;
#include<bits/stdc++.h>
using uint=unsigned;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
using pii=pair<int,int>;
using pll=pair<ll,ll>;
template<class T>using vc=vector<T>;
template<class T>using vvc=vc<vc<T>>;
template<class T>using vvvc=vvc<vc<T>>;
using vi=vc<int>;
using vvi=vc<vi>;
using vvvi=vc<vvi>;
using vl=vc<ll>;
using vvl=vc<vl>;
using vvvl=vc<vvl>;
template<class T>using smpq=priority_queue<T,vector<T>,greater<T>>;
template<class T>using bipq=priority_queue<T>;
#define rep(i,n) for(ll (i)=0;i<(ll)(n);i++)
#define REP(i,j,n) for(ll (i)=(j);i<(ll)(n);i++)
#define DREP(i,n,m) for(ll (i)=(n);i>=(m);i--)
#define drep(i,n) for(ll i=((n)-1);i>=0;i--)
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define is insert
#define bg begin()
#define ed end()
void scan(int&a) { cin >> a; }
void scan(ll&a) { cin >> a; }
void scan(string&a) { cin >> a; }
void scan(char&a) { cin >> a; }
void scan(uint&a) { cin >> a; }
void scan(ull&a) { cin >> a; }
void scan(bool&a) { cin >> a; }
void scan(ld&a){ cin>> a;}
template<class T> void scan(vector<T>&a) { for(auto&x:a) scan(x); }
void read() {}
template<class Head, class... Tail> void read(Head&head, Tail&... tail) { scan(head); read(tail...); }
#define INT(...) int __VA_ARGS__; read(__VA_ARGS__);
#define LL(...) ll __VA_ARGS__; read(__VA_ARGS__);
#define ULL(...) ull __VA_ARGS__; read(__VA_ARGS__);
#define STR(...) string __VA_ARGS__; read(__VA_ARGS__);
#define CHR(...) char __VA_ARGS__; read(__VA_ARGS__);
#define DBL(...) double __VA_ARGS__; read(__VA_ARGS__);
#define LD(...) ld __VA_ARGS__; read(__VA_ARGS__);
#define VC(type, name, ...) vector<type> name(__VA_ARGS__); read(name);
#define VVC(type, name, size, ...) vector<vector<type>> name(size, vector<type>(__VA_ARGS__)); read(name);
void print(int a) { cout << a; }
void print(ll a) { cout << a; }
void print(string a) { cout << a; }
void print(char a) { cout << a; }
void print(uint a) { cout << a; }
void print(bool a) { cout << a; }
void print(ull a) { cout << a; }
void print(ld a){ cout<< a; }
template<class T> void print(vector<T>a) { for(int i=0;i<(int)a.size();i++){if(i)cout<<" ";print(a[i]);}cout<<endl;}
void PRT() { cout <<endl; return ; }
template<class T> void PRT(T a) { print(a); cout <<endl; return; }
template<class Head, class... Tail> void PRT(Head head, Tail ... tail) { print(head); cout << " "; PRT(tail...); return; }
template<class T,class F>
bool chmin(T &x, F y){
if(x>y){
x=y;
return true;
}
return false;
}
template<class T, class F>
bool chmax(T &x, F y){
if(x<y){
x=y;
return true;
}
return false;
}
void YesNo(bool b){
cout<<(b?"Yes":"No")<<endl;
}
void Yes(){
cout<<"Yes"<<endl;
}
void No(){
cout<<"No"<<endl;
}
template<class T>
int popcount(T n){
return __builtin_popcount(n);
}
template<class T>
T sum(vc<T>&a){
return accumulate(all(a),T(0));
}
template<class T>
T max(vc<T>&a){
return *max_element(all(a));
}
template<class T>
T min(vc<T>&a){
return *min_element(all(a));
}
template<class T>
void unique(vc<T>&a){
a.erase(unique(all(a)),a.end());
}
vvi readgraph(int n,int m,int off = -1){
vvi g(n);
rep(i, m){
int u,v;
cin>>u>>v;
u+=off,v+=off;
g[u].push_back(v);
g[v].push_back(u);
}
return g;
}
vvi readtree(int n,int off=-1){
return readgraph(n,n-1,off);
}
template<class T>
vc<T> presum(vc<T> &a){
vc<T> ret(a.size()+1);
rep(i,a.size())ret[i+1]=ret[i]+a[i];
return ret;
}
template<class T, class F>
vc<T> &operator+=(vc<T> &a,F b){
for (auto&v:a)v += b;
return a;
}
template<class T, class F>
vc<T> &operator-=(vc<T>&a,F b){
for (auto&v:a)v-=b;
return a;
}
template<class T, class F>
vc<T> &operator*=(vc<T>&a,F b){
for (auto&v:a)v*=b;
return a;
}
#endif
double pass_time=0;
void solve(){
INT(n);
vvc<pll>g(n);
rep(i,n-1){
INT(u,v,w);
g[u].pb(pll{v,w});
g[v].pb(pll{u,w});
}
vi depth(n);
vvc<pll> d(n,vc<pll>(20));
vi ord(n);
auto dfs=[&](auto&dfs,int u,int v,int&t)->void{
ord[u]=t++;
for(auto [x,w]:g[u]){
if(x==v)continue;
depth[x]=depth[u]+1;
d[x][0]=mp(u,w);
dfs(dfs,x,u,t);
}
};int tt=0;dfs(dfs,0,-1,tt);
REP(j,1,20)rep(i,n){
d[i][j].fi=d[d[i][j-1].fi][j-1].fi;
d[i][j].se=d[i][j-1].se+d[d[i][j-1].fi][j-1].se;
}
auto lca=[&](int u,int v)->pll{
if(depth[u]<depth[v])swap(u,v);
ll res=0;
drep(j,20){
int nv=d[v][j].fi;
if(depth[u]<=depth[nv])res+=d[v][j].se,v=nv;
}
if(u==v)return mp(u,res);
drep(j,20){
int nu=d[u][j].fi,nv=d[v][j].fi;
if(nu!=nv){
res+=d[u][j].se;
res+=d[v][j].se;
u=nu,v=nv;
}
}
return mp(d[u][0].fi,d[u][0].se+res);
};
INT(q);
auto tp=[&](int u){
return lca(u,0).se;
};
while(q--){
INT(x,y,z);
ll ans=0;
ans+=tp(lca(lca(x,y).fi,lca(y,z).fi).fi)*3;
ans-=tp(lca(x,y).fi)+tp(lca(y,z).fi)+tp(lca(x,z).fi);
ans+=tp(x)+tp(y)+tp(z);
PRT(ans);
}
}
signed main(){
cin.tie(0)->sync_with_stdio(0);
pass_time=clock();
int t=1;
while(t--)solve();
pass_time=clock()-pass_time;
dbg(pass_time/CLOCKS_PER_SEC);
}
t9unkubj