// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
- insert(x),erase(x)
- find_by_order(k): return iterator to the k-th smallest element
- order_of_key(x): the number of elements that are strictly smaller
*/
#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0,1.0);
#define int long long
#define ld long double
#define pii pair<int,int>
#define piii pair<pii,int>
#define mpp make_pair
#define fi first
#define se second
const int inf=1e18;
const int mod=1e9+7;
const int maxn=200005;
const int bl=650;
const int maxs=655;
const int maxm=200005;
const int maxq=500005;
const int maxl=20;
const int maxa=250000;
const int root=3;
int power(int a,int n){
int res=1;
while(n){
if(n&1) res=res*a%mod;
a=a*a%mod;n>>=1;
}
return res;
}
const int iroot=power(3,mod-2);
const int base=101;
map<int,int> mp[maxn];
void solve(){
int n;cin >> n;
vector<int> a(n+1),c(n+1),h(n+1),deg(n+1,0);
vector<vector<int>> child(n+1);
for(int i=1;i<=n;i++){
cin >> a[i] >> h[i] >> c[i];
child[a[i]].push_back(i);deg[a[i]]++;
}
queue<int> q;
for(int i=1;i<=n;i++) if(deg[i]==0) q.push(i);
while(!q.empty()){
int u=q.front();q.pop();
deg[a[u]]--;
if(deg[a[u]]==0) q.push(a[u]);
}
auto unions = [&](int u,int v){
if((int)mp[u].size()>(int)mp[v].size()) mp[u].swap(mp[v]);
for(auto [x,val]:mp[v]) mp[u][x]+=val;
};
function<void(int)> dfs = [&](int u){
for(int v:child[u]) dfs(v),unions(u,v);
mp[u][0]+=c[u];
int del=c[u];
auto it=mp[u].upper_bound(h[u]);
while(it!=mp[u].begin()){
prev(it);
if(it->se<=del) del-=it->se,it=mp[u].erase(it);
else{it->se-=del;break;}
}
mp[u][h[u]+1]+=c[u];
};
int total=0;
for(int i=1;i<=n;i++){
if(deg[i]){
int u=i,sum=0;
vector<pii> cc,nw;
do{
cc.push_back({h[u],u});sum+=c[u];
for(int v:child[u]) if(!deg[v]) dfs(v),unions(i,v);
u=a[u];
}while(u!=i);
sort(cc.begin(),cc.end());
for(auto [x,u]:cc) deg[u]=0;
for(auto [x,u]:cc){
if(nw.empty() || nw.back().fi!=x) nw.push_back({x,c[u]});
else nw.back().se+=c[u];
}
cc.clear();
for(auto [x,val]:mp[i]) cc.push_back({x,val});
int pos=0,cur=0,res=sum+mp[i][0];
for(auto [x,val]:nw){
while(pos<(int)cc.size() && cc[pos].fi<=x) cur+=cc[pos++].se;
res=min(res,cur+sum-val);
}
total+=res;
}
}
cout << total << '\n';
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);cout.tie(NULL);
int test=1;//cin >> test;
while(test--) solve();
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
13 ms |
19412 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
13 ms |
19412 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
13 ms |
19412 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
