#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<ll,ll>;
const ll maxn=3e5+10;
vector<pii> g[maxn];
multiset<ll> slope[maxn];
void dfs(ll node,ll c=-1){
for(auto i:g[node]){
dfs(i.first,i.second);
}
pair<ll,ll> maxi={-1,-1};
for(auto i:g[node]){
maxi=max(maxi,{ll(slope[i.first].size()),i.first});
}
if(maxi.first!=-1){
swap(slope[maxi.second],slope[node]);
for(auto i:g[node]){
if(i.first==maxi.second) continue;
for(ll j:slope[i.first]){
slope[node].emplace(j);
}
}
}
for(int i=0;i<ll(g[node].size())-1;i++){
auto it=slope[node].end();
it--;
slope[node].erase(it);
}
if(slope[node].empty()){
slope[node].emplace(c);
slope[node].emplace(c);
return;
}
if(c!=-1){
auto it=--slope[node].end();
ll posl=*it+c;
slope[node].erase(it);
it=--slope[node].end();
ll predposl=*it+c;
slope[node].erase(it);
slope[node].emplace(posl);
slope[node].emplace(predposl);
}
}
int main(){
ll n,m;
cin>>n>>m;
n+=m;
ll vr=0;
for(ll i=2;i<=n;i++){
ll p,c; cin>>p>>c;
g[p].push_back({i,c});
vr+=c;
}
dfs(1);
ll sl=0;
vector<ll> nes;
for(ll i:slope[1]) nes.push_back(i);
reverse(nes.begin(),nes.end());
nes.push_back(0);
for(ll i=1;i<ll(nes.size());i++){
vr-=sl*(nes[i-1]-nes[i]);
sl++;
}
cout<<vr;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
21440 KB |
Output is correct |
| 2 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 3 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 4 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 5 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 6 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 7 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 8 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 9 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 10 |
Correct |
11 ms |
21460 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 2 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 3 |
Correct |
12 ms |
21332 KB |
Output is correct |
| 4 |
Correct |
11 ms |
21440 KB |
Output is correct |
| 5 |
Correct |
12 ms |
21444 KB |
Output is correct |
| 6 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 7 |
Correct |
12 ms |
21460 KB |
Output is correct |
| 8 |
Correct |
11 ms |
21436 KB |
Output is correct |
| 9 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 10 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 11 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 12 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 13 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 14 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 15 |
Correct |
11 ms |
21432 KB |
Output is correct |
| 16 |
Correct |
14 ms |
21460 KB |
Output is correct |
| 17 |
Correct |
12 ms |
21612 KB |
Output is correct |
| 18 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 19 |
Correct |
11 ms |
21460 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
21440 KB |
Output is correct |
| 2 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 3 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 4 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 5 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 6 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 7 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 8 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 9 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 10 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 11 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 12 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 13 |
Correct |
12 ms |
21332 KB |
Output is correct |
| 14 |
Correct |
11 ms |
21440 KB |
Output is correct |
| 15 |
Correct |
12 ms |
21444 KB |
Output is correct |
| 16 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 17 |
Correct |
12 ms |
21460 KB |
Output is correct |
| 18 |
Correct |
11 ms |
21436 KB |
Output is correct |
| 19 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 20 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 21 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 22 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 23 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 24 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 25 |
Correct |
11 ms |
21432 KB |
Output is correct |
| 26 |
Correct |
14 ms |
21460 KB |
Output is correct |
| 27 |
Correct |
12 ms |
21612 KB |
Output is correct |
| 28 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 29 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 30 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 31 |
Correct |
12 ms |
21460 KB |
Output is correct |
| 32 |
Correct |
12 ms |
21588 KB |
Output is correct |
| 33 |
Correct |
12 ms |
21716 KB |
Output is correct |
| 34 |
Correct |
13 ms |
21716 KB |
Output is correct |
| 35 |
Correct |
17 ms |
21844 KB |
Output is correct |
| 36 |
Correct |
14 ms |
21972 KB |
Output is correct |
| 37 |
Correct |
17 ms |
21964 KB |
Output is correct |
| 38 |
Correct |
15 ms |
22100 KB |
Output is correct |
| 39 |
Correct |
15 ms |
22120 KB |
Output is correct |
| 40 |
Correct |
14 ms |
22232 KB |
Output is correct |
| 41 |
Correct |
14 ms |
22228 KB |
Output is correct |
| 42 |
Correct |
13 ms |
21588 KB |
Output is correct |
| 43 |
Correct |
14 ms |
22312 KB |
Output is correct |
| 44 |
Correct |
15 ms |
22228 KB |
Output is correct |
| 45 |
Correct |
15 ms |
22228 KB |
Output is correct |
| 46 |
Correct |
15 ms |
22612 KB |
Output is correct |
| 47 |
Correct |
15 ms |
22612 KB |
Output is correct |
| 48 |
Correct |
15 ms |
22356 KB |
Output is correct |
| 49 |
Correct |
15 ms |
22484 KB |
Output is correct |
| 50 |
Correct |
14 ms |
22356 KB |
Output is correct |
| 51 |
Correct |
14 ms |
22228 KB |
Output is correct |
| 52 |
Correct |
15 ms |
22356 KB |
Output is correct |
| 53 |
Correct |
15 ms |
22484 KB |
Output is correct |
| 54 |
Correct |
15 ms |
22612 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
21440 KB |
Output is correct |
| 2 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 3 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 4 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 5 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 6 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 7 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 8 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 9 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 10 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 11 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 12 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 13 |
Correct |
12 ms |
21332 KB |
Output is correct |
| 14 |
Correct |
11 ms |
21440 KB |
Output is correct |
| 15 |
Correct |
12 ms |
21444 KB |
Output is correct |
| 16 |
Correct |
11 ms |
21332 KB |
Output is correct |
| 17 |
Correct |
12 ms |
21460 KB |
Output is correct |
| 18 |
Correct |
11 ms |
21436 KB |
Output is correct |
| 19 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 20 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 21 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 22 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 23 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 24 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 25 |
Correct |
11 ms |
21432 KB |
Output is correct |
| 26 |
Correct |
14 ms |
21460 KB |
Output is correct |
| 27 |
Correct |
12 ms |
21612 KB |
Output is correct |
| 28 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 29 |
Correct |
11 ms |
21460 KB |
Output is correct |
| 30 |
Correct |
13 ms |
21460 KB |
Output is correct |
| 31 |
Correct |
12 ms |
21460 KB |
Output is correct |
| 32 |
Correct |
12 ms |
21588 KB |
Output is correct |
| 33 |
Correct |
12 ms |
21716 KB |
Output is correct |
| 34 |
Correct |
13 ms |
21716 KB |
Output is correct |
| 35 |
Correct |
17 ms |
21844 KB |
Output is correct |
| 36 |
Correct |
14 ms |
21972 KB |
Output is correct |
| 37 |
Correct |
17 ms |
21964 KB |
Output is correct |
| 38 |
Correct |
15 ms |
22100 KB |
Output is correct |
| 39 |
Correct |
15 ms |
22120 KB |
Output is correct |
| 40 |
Correct |
14 ms |
22232 KB |
Output is correct |
| 41 |
Correct |
14 ms |
22228 KB |
Output is correct |
| 42 |
Correct |
13 ms |
21588 KB |
Output is correct |
| 43 |
Correct |
14 ms |
22312 KB |
Output is correct |
| 44 |
Correct |
15 ms |
22228 KB |
Output is correct |
| 45 |
Correct |
15 ms |
22228 KB |
Output is correct |
| 46 |
Correct |
15 ms |
22612 KB |
Output is correct |
| 47 |
Correct |
15 ms |
22612 KB |
Output is correct |
| 48 |
Correct |
15 ms |
22356 KB |
Output is correct |
| 49 |
Correct |
15 ms |
22484 KB |
Output is correct |
| 50 |
Correct |
14 ms |
22356 KB |
Output is correct |
| 51 |
Correct |
14 ms |
22228 KB |
Output is correct |
| 52 |
Correct |
15 ms |
22356 KB |
Output is correct |
| 53 |
Correct |
15 ms |
22484 KB |
Output is correct |
| 54 |
Correct |
15 ms |
22612 KB |
Output is correct |
| 55 |
Correct |
23 ms |
23252 KB |
Output is correct |
| 56 |
Correct |
54 ms |
28488 KB |
Output is correct |
| 57 |
Correct |
90 ms |
33724 KB |
Output is correct |
| 58 |
Correct |
117 ms |
37448 KB |
Output is correct |
| 59 |
Correct |
160 ms |
42588 KB |
Output is correct |
| 60 |
Correct |
203 ms |
47948 KB |
Output is correct |
| 61 |
Correct |
233 ms |
51912 KB |
Output is correct |
| 62 |
Correct |
261 ms |
55540 KB |
Output is correct |
| 63 |
Correct |
324 ms |
62740 KB |
Output is correct |
| 64 |
Correct |
340 ms |
63428 KB |
Output is correct |
| 65 |
Correct |
211 ms |
73268 KB |
Output is correct |
| 66 |
Correct |
211 ms |
73160 KB |
Output is correct |
| 67 |
Correct |
203 ms |
35916 KB |
Output is correct |
| 68 |
Correct |
287 ms |
75284 KB |
Output is correct |
| 69 |
Correct |
337 ms |
73288 KB |
Output is correct |
| 70 |
Correct |
338 ms |
73296 KB |
Output is correct |
| 71 |
Correct |
423 ms |
105052 KB |
Output is correct |
| 72 |
Correct |
372 ms |
104988 KB |
Output is correct |
| 73 |
Correct |
357 ms |
91764 KB |
Output is correct |
| 74 |
Correct |
390 ms |
91924 KB |
Output is correct |
| 75 |
Correct |
349 ms |
90692 KB |
Output is correct |
| 76 |
Correct |
347 ms |
90800 KB |
Output is correct |
| 77 |
Correct |
383 ms |
88608 KB |
Output is correct |
| 78 |
Correct |
367 ms |
85628 KB |
Output is correct |
| 79 |
Correct |
404 ms |
92328 KB |
Output is correct |
