#include <bits/stdc++.h>
using namespace std;
template<class F>
struct y_combinator_result{
F f;
template<class T> explicit y_combinator_result(T &&f): f(forward<T>(f)){ }
template<class ...Args> decltype(auto) operator()(Args &&...args){ return f(ref(*this), forward<Args>(args)...); }
};
template<class F>
decltype(auto) y_combinator(F &&f){
return y_combinator_result<decay_t<F>>(forward<F>(f));
}
int main(){
cin.tie(0)->sync_with_stdio(0);
cin.exceptions(ios::badbit | ios::failbit);
int n, m;
cin >> n >> m;
vector<vector<int>> adj(n + m);
vector<int> par_w(n + m);
for(auto u = 1; u < n + m; ++ u){
int p;
cin >> p >> par_w[u], -- p;
adj[p].push_back(u);
}
auto res = y_combinator([&](auto self, int u)->pair<pair<int, long long>, priority_queue<long long>>{
pair<int, long long> line{};
priority_queue<long long> pq;
if(u >= n){
line = {1, -par_w[u]};
pq = priority_queue<long long>{{}, vector<long long>(2, par_w[u])};
}
else{
for(auto v: adj[u]){
auto res_v = self(v);
auto &[line_v, pq_v] = res_v;
line.first += line_v.first, line.second += line_v.second;
if((int)pq.size() < (int)pq_v.size()){
swap(pq, pq_v);
}
while(!pq_v.empty()){
pq.push(pq_v.top());
pq_v.pop();
}
}
while(line.first > 1){
-- line.first;
line.second += pq.top();
pq.pop();
}
array<long long, 2> store{};
for(auto rep = 0; rep < 2; ++ rep){
store[rep] = pq.top() + par_w[u];
pq.pop();
}
for(auto x: store){
pq.push(x);
}
line.second -= par_w[u];
}
return {move(line), move(pq)};
})(0);
cout << 1LL * res.first.first * res.second.top() + res.first.second << "\n";
return 0;
}
/*
*/
////////////////////////////////////////////////////////////////////////////////////////
// //
// Coded by Aeren //
// //
////////////////////////////////////////////////////////////////////////////////////////
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
216 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
0 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
216 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
204 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
0 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
0 ms |
204 KB |
Output is correct |
| 23 |
Correct |
0 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
0 ms |
204 KB |
Output is correct |
| 27 |
Correct |
0 ms |
204 KB |
Output is correct |
| 28 |
Correct |
1 ms |
204 KB |
Output is correct |
| 29 |
Correct |
1 ms |
204 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
332 KB |
Output is correct |
| 33 |
Correct |
2 ms |
460 KB |
Output is correct |
| 34 |
Correct |
2 ms |
460 KB |
Output is correct |
| 35 |
Correct |
3 ms |
460 KB |
Output is correct |
| 36 |
Correct |
2 ms |
460 KB |
Output is correct |
| 37 |
Correct |
3 ms |
588 KB |
Output is correct |
| 38 |
Correct |
3 ms |
588 KB |
Output is correct |
| 39 |
Correct |
3 ms |
588 KB |
Output is correct |
| 40 |
Correct |
3 ms |
1612 KB |
Output is correct |
| 41 |
Correct |
3 ms |
1612 KB |
Output is correct |
| 42 |
Correct |
2 ms |
588 KB |
Output is correct |
| 43 |
Correct |
3 ms |
1100 KB |
Output is correct |
| 44 |
Correct |
4 ms |
908 KB |
Output is correct |
| 45 |
Correct |
3 ms |
844 KB |
Output is correct |
| 46 |
Correct |
3 ms |
584 KB |
Output is correct |
| 47 |
Correct |
3 ms |
584 KB |
Output is correct |
| 48 |
Correct |
2 ms |
460 KB |
Output is correct |
| 49 |
Correct |
3 ms |
588 KB |
Output is correct |
| 50 |
Correct |
2 ms |
460 KB |
Output is correct |
| 51 |
Correct |
2 ms |
460 KB |
Output is correct |
| 52 |
Correct |
2 ms |
460 KB |
Output is correct |
| 53 |
Correct |
3 ms |
588 KB |
Output is correct |
| 54 |
Correct |
3 ms |
588 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
0 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
216 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
204 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
0 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
0 ms |
204 KB |
Output is correct |
| 23 |
Correct |
0 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
204 KB |
Output is correct |
| 26 |
Correct |
0 ms |
204 KB |
Output is correct |
| 27 |
Correct |
0 ms |
204 KB |
Output is correct |
| 28 |
Correct |
1 ms |
204 KB |
Output is correct |
| 29 |
Correct |
1 ms |
204 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
332 KB |
Output is correct |
| 33 |
Correct |
2 ms |
460 KB |
Output is correct |
| 34 |
Correct |
2 ms |
460 KB |
Output is correct |
| 35 |
Correct |
3 ms |
460 KB |
Output is correct |
| 36 |
Correct |
2 ms |
460 KB |
Output is correct |
| 37 |
Correct |
3 ms |
588 KB |
Output is correct |
| 38 |
Correct |
3 ms |
588 KB |
Output is correct |
| 39 |
Correct |
3 ms |
588 KB |
Output is correct |
| 40 |
Correct |
3 ms |
1612 KB |
Output is correct |
| 41 |
Correct |
3 ms |
1612 KB |
Output is correct |
| 42 |
Correct |
2 ms |
588 KB |
Output is correct |
| 43 |
Correct |
3 ms |
1100 KB |
Output is correct |
| 44 |
Correct |
4 ms |
908 KB |
Output is correct |
| 45 |
Correct |
3 ms |
844 KB |
Output is correct |
| 46 |
Correct |
3 ms |
584 KB |
Output is correct |
| 47 |
Correct |
3 ms |
584 KB |
Output is correct |
| 48 |
Correct |
2 ms |
460 KB |
Output is correct |
| 49 |
Correct |
3 ms |
588 KB |
Output is correct |
| 50 |
Correct |
2 ms |
460 KB |
Output is correct |
| 51 |
Correct |
2 ms |
460 KB |
Output is correct |
| 52 |
Correct |
2 ms |
460 KB |
Output is correct |
| 53 |
Correct |
3 ms |
588 KB |
Output is correct |
| 54 |
Correct |
3 ms |
588 KB |
Output is correct |
| 55 |
Correct |
7 ms |
1100 KB |
Output is correct |
| 56 |
Correct |
26 ms |
3152 KB |
Output is correct |
| 57 |
Correct |
47 ms |
4852 KB |
Output is correct |
| 58 |
Correct |
69 ms |
6364 KB |
Output is correct |
| 59 |
Correct |
84 ms |
8144 KB |
Output is correct |
| 60 |
Correct |
130 ms |
9792 KB |
Output is correct |
| 61 |
Correct |
128 ms |
11600 KB |
Output is correct |
| 62 |
Correct |
145 ms |
12488 KB |
Output is correct |
| 63 |
Correct |
181 ms |
14456 KB |
Output is correct |
| 64 |
Correct |
187 ms |
15012 KB |
Output is correct |
| 65 |
Correct |
146 ms |
83652 KB |
Output is correct |
| 66 |
Correct |
141 ms |
83592 KB |
Output is correct |
| 67 |
Correct |
123 ms |
18032 KB |
Output is correct |
| 68 |
Correct |
163 ms |
48180 KB |
Output is correct |
| 69 |
Correct |
182 ms |
47384 KB |
Output is correct |
| 70 |
Correct |
182 ms |
47552 KB |
Output is correct |
| 71 |
Correct |
170 ms |
19056 KB |
Output is correct |
| 72 |
Correct |
170 ms |
19096 KB |
Output is correct |
| 73 |
Correct |
153 ms |
18288 KB |
Output is correct |
| 74 |
Correct |
149 ms |
18356 KB |
Output is correct |
| 75 |
Correct |
150 ms |
18044 KB |
Output is correct |
| 76 |
Correct |
151 ms |
18244 KB |
Output is correct |
| 77 |
Correct |
164 ms |
18704 KB |
Output is correct |
| 78 |
Correct |
158 ms |
18576 KB |
Output is correct |
| 79 |
Correct |
143 ms |
21440 KB |
Output is correct |
