結果
| 問題 |
No.2654 [Cherry 6th Tune] Re: start! (Black Sheep)
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2024-02-26 18:07:38 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 5,756 bytes |
| コンパイル時間 | 3,360 ms |
| コンパイル使用メモリ | 258,876 KB |
| 実行使用メモリ | 62,752 KB |
| 最終ジャッジ日時 | 2024-09-29 11:41:37 |
| 合計ジャッジ時間 | 11,151 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 36 WA * 4 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
#define drep(i, cc, n) for (ll i = (cc); i <= (n); ++i)
#define rep(i, n) drep(i, 0, n - 1)
#define all(a) (a).begin(), (a).end()
#define pb push_back
#define fi first
#define se second
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
const ll MOD1000000007 = 1000000007;
const ll MOD998244353 = 998244353;
const ll MOD[3] = {999727999, 1070777777, 1000000007};
const ll LINF = 1LL << 60LL;
const int IINF = (1 << 30) - 1;
template<typename T>
struct edge{
int from, to;
T cost;
int id;
edge(){}
edge(int to, T cost=1) : from(-1), to(to), cost(cost){}
edge(int to, T cost, int id) : from(-1), to(to), cost(cost), id(id){}
edge(int from, int to, T cost, int id) : from(from), to(to), cost(cost), id(id){}
};
template<typename T>
struct redge{
int from, to;
T cap, cost;
int rev;
redge(int to, T cap, T cost=(T)(1)) : from(-1), to(to), cap(cap), cost(cost){}
redge(int to, T cap, T cost, int rev) : from(-1), to(to), cap(cap), cost(cost), rev(rev){}
};
template<typename T> using Edges = vector<edge<T>>;
template<typename T> using weighted_graph = vector<Edges<T>>;
template<typename T> using tree = vector<Edges<T>>;
using unweighted_graph = vector<vector<int>>;
template<typename T> using residual_graph = vector<vector<redge<T>>>;
void solve(){
int n; cin >> n;
vector<ll> a(n+1);
for(int i=0; i<n+1; i++) cin >> a[i];
tree<int> T(n+1);
for(int i=0; i<n; i++){
int u, v; cin >> u >> v;
T[u].push_back(edge<int>(v));
T[v].push_back(edge<int>(u));
}
// lo <= hi <= lo+1
multiset<ll> lo, hi;
ll lsum=0, hsum=0;
lo.insert(-LINF);
hi.insert(LINF);
auto add = [&](ll x){
if((int)lo.size() == (int)hi.size()){
auto itr = lo.end();
itr--;
if(*(itr) <= x){
hi.insert(x);
hsum += x;
}else{
hi.insert(*itr);
hsum += *itr;
lsum -= *itr;
lo.erase(itr);
lo.insert(x);
lsum += x;
}
}else if((int)lo.size() < (int)hi.size()){
if(*(hi.begin()) < x){
lo.insert(*(hi.begin()));
lsum += *(hi.begin());
hsum -= *(hi.begin());
hi.erase(hi.begin());
hi.insert(x);
hsum += x;
}else{
lo.insert(x);
lsum += x;
}
}
};
auto erase = [&](ll x){
if(lo.find(x)!=lo.end()){
lo.erase(lo.lower_bound(x));
lsum -= x;
if((int)lo.size()+1 < (int)hi.size()){
lo.insert(*(hi.begin()));
lsum += *(hi.begin());
hsum -= *(hi.begin());
hi.erase(hi.begin());
}
}else{
hi.erase(hi.lower_bound(x));
hsum -= x;
if((int)lo.size() > (int)hi.size()){
auto itr = lo.end();
itr--;
hi.insert(*itr);
hsum += *itr;
lsum -= *itr;
lo.erase(itr);
}
}
};
auto query = [&](){
ll ans = LINF;
//右端を選択
{
ll cost = 0;
if((int)lo.size() == (int)hi.size()){
// 中央値はunique
auto itr = hi.end();
itr--; itr--;
ll mx = *itr;
itr = lo.end();
itr--;
ll mid = *itr;
cost += mid*(ll)(lo.size()-1) - lsum;
cost += (hsum-mx) - mid*(ll)(hi.size()-2);
if(mx == mid) cost++;
}else{
auto itr = hi.end();
itr--; itr--;
ll mx = *itr;
itr = lo.end();
itr--;
ll lmid = *itr;
itr--;
ll rmid = *itr;
cost += rmid*(ll)(lo.size()-1) - lsum;
cost += (hsum-mx) - rmid*(ll)(hi.size()-2);
if(lmid==rmid&&lmid==mx) cost++;
}
ans = min(ans, cost);
}
//左端を選択
{
ll cost = 0;
if((int)lo.size() == (int)hi.size()){
// 中央値はunique
auto itr = lo.begin();
itr++;
ll mn = *itr;
ll mid = *hi.begin();
cost += mid*(ll)(lo.size()-2) - (lsum - mn);
cost += hsum - mid*(ll)(hi.size()-1);
if(mn == mid) cost++;
}else{
auto itr = lo.begin();
itr++;
ll mn = *itr;
itr = hi.begin();
ll lmid = *itr;
itr++;
ll rmid = *itr;
cost += lmid*(ll)(lo.size()-2) - (lsum - mn);
cost += hsum - lmid*(ll)(hi.size()-1);
if(lmid==rmid&&lmid==mn) cost++;
}
ans = min(ans, cost);
}
return ans;
};
vector<ll> ans(n+1, -1), depth(n+1, 0);
function<void(int, int)> dfs = [&](int v, int p){
add(a[v]);
if(depth[v]>=2) ans[v] = query();
for(edge<int> e : T[v]) if(e.to!=p){
depth[e.to] = depth[v]+1;
dfs(e.to, v);
}
erase(a[v]);
}; dfs(0, -1);
for(int v=1; v<n+1; v++) cout << ans[v] << '\n';
}
int main(){
cin.tie(nullptr);
ios::sync_with_stdio(false);
int T=1;
// cin >> T;
while(T--) solve();
}