| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1352617 | Aviansh | Migration Plan (JOI25_migration) | C++20 | 3163 ms | 541912 KiB |
#include <bits/stdc++.h>
using namespace std;
#define int long long
int tim = 0;
void dfs(int st, vector<int>g[], int dep[], int tin[], int tout[]){
tin[st]=++tim;
for(int i : g[st]){
dep[i]=dep[st]+1;
dfs(i,g,dep,tin,tout);
}
tout[st]=tim;
}
signed main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
int p[n];
p[0]=-1;
vector<int>g[n];
for(int i = 1;i<n;i++){
cin >> p[i];
p[i]--;
g[p[i]].push_back(i);
}
int k[n];
for(int &i : k)
cin >> i;
int dep[n];
int tin[n];
int tout[n];
dep[0]=0;
dfs(0,g,dep,tin,tout);
multiset<array<int,2>>sums[n];
for(int i = 0;i<n;i++){
sums[dep[i]].insert({tin[i],k[i]});
}
int q;
cin >> q;
while(q--){
int t;
cin >> t;
if(t==1){
int x,y;
cin >> x >> y;
if(sums[x].size()>sums[y].size()){
swap(sums[x],sums[y]);
}
for(array<int,2>a:sums[x]){
sums[y].insert(a);
}
sums[x].clear();
}
else if(t==2){
int a,l;
cin >> a >> l;
a--;
sums[dep[a]].insert({tin[a],l});
}
else{
int i;
cin >> i;
i--;
auto it = sums[dep[i]].lower_bound({tin[i],-1});
int sum = 0;
while(it!=sums[dep[i]].end()&&(*it)[0]<=tout[i]){
sum+=(*it)[1];
sums[dep[i]].erase(it);
it = sums[dep[i]].lower_bound({tin[i],-1});
}
sums[dep[i]].insert({tin[i],sum});
cout << sum << "\n";
}
}
return 0;
}
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