#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
using ll=long long;
struct A{
multiset<ll> L,R;
ll mn;
A():mn(0){}
void insert(ll x){
if(L.empty()) L.emplace(x), R.emplace(x);
else if(x<*L.rbegin()){
mn+=*L.rbegin()-x;
L.emplace(x), L.emplace(x);
R.emplace(*L.rbegin()), L.erase(prev(L.end()));
}
else if(x>*R.begin()){
mn+=x-*R.begin();
R.emplace(x), R.emplace(x);
L.emplace(*R.begin()), R.erase(R.begin());
}
else L.emplace(x), R.emplace(x);
}
A& operator+=(A o){
if(L.size()<o.L.size()) swap(*this,o);
for(auto &e:o.L){
if(e<*R.begin()) L.emplace(e);
else{
mn+=e-*R.begin();
R.emplace(e), L.emplace(*R.begin()), R.erase(R.begin());
}
}
for(auto &e:o.R){
if(e>*L.rbegin()) R.emplace(e);
else{
mn+=*L.rbegin()-e;
L.emplace(e), R.emplace(*L.rbegin()), L.erase(prev(L.end()));
}
}
mn+=o.mn;
return *this;
}
void clear(){
L.clear(),R.clear();
}
}t[300005];
int p[300005];
ll c[300005];
int main(){
ios::sync_with_stdio(false); cin.tie(0);
int n,m; cin>>n>>m;
for(int i=2;i<=n+m;++i) cin>>p[i]>>c[i];
for(int i=n+m;i>n;--i) t[p[i]].insert(c[i]);
for(int i=n;i>1;--i){
while(t[i].R.size()>1){
auto itr=prev(t[i].R.end());
t[i].R.erase(itr);
}
auto itr1=prev(t[i].L.end()), itr2=t[i].R.begin();
t[i].L.emplace(*itr1+c[i]), t[i].L.erase(itr1);
t[i].R.emplace(*itr2+c[i]), t[i].R.erase(itr2);
t[p[i]]+=t[i];
t[i].clear();
}
cout<<t[1].mn;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
32092 KB |
Output is correct |
2 |
Correct |
6 ms |
32224 KB |
Output is correct |
3 |
Correct |
7 ms |
32092 KB |
Output is correct |
4 |
Correct |
6 ms |
32224 KB |
Output is correct |
5 |
Correct |
6 ms |
32092 KB |
Output is correct |
6 |
Correct |
6 ms |
32092 KB |
Output is correct |
7 |
Correct |
7 ms |
32088 KB |
Output is correct |
8 |
Correct |
7 ms |
32088 KB |
Output is correct |
9 |
Correct |
6 ms |
32092 KB |
Output is correct |
10 |
Correct |
6 ms |
32092 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
32092 KB |
Output is correct |
2 |
Correct |
6 ms |
32088 KB |
Output is correct |
3 |
Correct |
7 ms |
32092 KB |
Output is correct |
4 |
Correct |
6 ms |
32196 KB |
Output is correct |
5 |
Correct |
6 ms |
32092 KB |
Output is correct |
6 |
Correct |
7 ms |
32184 KB |
Output is correct |
7 |
Correct |
7 ms |
32088 KB |
Output is correct |
8 |
Correct |
6 ms |
32092 KB |
Output is correct |
9 |
Correct |
7 ms |
32092 KB |
Output is correct |
10 |
Correct |
6 ms |
32092 KB |
Output is correct |
11 |
Correct |
6 ms |
32092 KB |
Output is correct |
12 |
Correct |
6 ms |
32092 KB |
Output is correct |
13 |
Correct |
6 ms |
32088 KB |
Output is correct |
14 |
Correct |
6 ms |
32168 KB |
Output is correct |
15 |
Correct |
9 ms |
32092 KB |
Output is correct |
16 |
Correct |
7 ms |
32092 KB |
Output is correct |
17 |
Correct |
7 ms |
32092 KB |
Output is correct |
18 |
Correct |
8 ms |
32092 KB |
Output is correct |
19 |
Correct |
7 ms |
32196 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
32092 KB |
Output is correct |
2 |
Correct |
6 ms |
32224 KB |
Output is correct |
3 |
Correct |
7 ms |
32092 KB |
Output is correct |
4 |
Correct |
6 ms |
32224 KB |
Output is correct |
5 |
Correct |
6 ms |
32092 KB |
Output is correct |
6 |
Correct |
6 ms |
32092 KB |
Output is correct |
7 |
Correct |
7 ms |
32088 KB |
Output is correct |
8 |
Correct |
7 ms |
32088 KB |
Output is correct |
9 |
Correct |
6 ms |
32092 KB |
Output is correct |
10 |
Correct |
6 ms |
32092 KB |
Output is correct |
11 |
Correct |
6 ms |
32092 KB |
Output is correct |
12 |
Correct |
6 ms |
32088 KB |
Output is correct |
13 |
Correct |
7 ms |
32092 KB |
Output is correct |
14 |
Correct |
6 ms |
32196 KB |
Output is correct |
15 |
Correct |
6 ms |
32092 KB |
Output is correct |
16 |
Correct |
7 ms |
32184 KB |
Output is correct |
17 |
Correct |
7 ms |
32088 KB |
Output is correct |
18 |
Correct |
6 ms |
32092 KB |
Output is correct |
19 |
Correct |
7 ms |
32092 KB |
Output is correct |
20 |
Correct |
6 ms |
32092 KB |
Output is correct |
21 |
Correct |
6 ms |
32092 KB |
Output is correct |
22 |
Correct |
6 ms |
32092 KB |
Output is correct |
23 |
Correct |
6 ms |
32088 KB |
Output is correct |
24 |
Correct |
6 ms |
32168 KB |
Output is correct |
25 |
Correct |
9 ms |
32092 KB |
Output is correct |
26 |
Correct |
7 ms |
32092 KB |
Output is correct |
27 |
Correct |
7 ms |
32092 KB |
Output is correct |
28 |
Correct |
8 ms |
32092 KB |
Output is correct |
29 |
Correct |
7 ms |
32196 KB |
Output is correct |
30 |
Correct |
7 ms |
32088 KB |
Output is correct |
31 |
Correct |
7 ms |
32088 KB |
Output is correct |
32 |
Correct |
8 ms |
32344 KB |
Output is correct |
33 |
Correct |
9 ms |
32348 KB |
Output is correct |
34 |
Correct |
9 ms |
32548 KB |
Output is correct |
35 |
Correct |
10 ms |
32344 KB |
Output is correct |
36 |
Correct |
10 ms |
32344 KB |
Output is correct |
37 |
Correct |
10 ms |
32348 KB |
Output is correct |
38 |
Correct |
14 ms |
32460 KB |
Output is correct |
39 |
Correct |
11 ms |
32348 KB |
Output is correct |
40 |
Correct |
8 ms |
32092 KB |
Output is correct |
41 |
Correct |
8 ms |
32092 KB |
Output is correct |
42 |
Correct |
8 ms |
32092 KB |
Output is correct |
43 |
Correct |
78 ms |
32348 KB |
Output is correct |
44 |
Correct |
64 ms |
32552 KB |
Output is correct |
45 |
Correct |
62 ms |
32348 KB |
Output is correct |
46 |
Correct |
10 ms |
32604 KB |
Output is correct |
47 |
Correct |
10 ms |
32604 KB |
Output is correct |
48 |
Correct |
9 ms |
32604 KB |
Output is correct |
49 |
Correct |
9 ms |
32860 KB |
Output is correct |
50 |
Correct |
9 ms |
32576 KB |
Output is correct |
51 |
Correct |
9 ms |
32604 KB |
Output is correct |
52 |
Correct |
10 ms |
32604 KB |
Output is correct |
53 |
Correct |
10 ms |
32604 KB |
Output is correct |
54 |
Correct |
11 ms |
32600 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
32092 KB |
Output is correct |
2 |
Correct |
6 ms |
32224 KB |
Output is correct |
3 |
Correct |
7 ms |
32092 KB |
Output is correct |
4 |
Correct |
6 ms |
32224 KB |
Output is correct |
5 |
Correct |
6 ms |
32092 KB |
Output is correct |
6 |
Correct |
6 ms |
32092 KB |
Output is correct |
7 |
Correct |
7 ms |
32088 KB |
Output is correct |
8 |
Correct |
7 ms |
32088 KB |
Output is correct |
9 |
Correct |
6 ms |
32092 KB |
Output is correct |
10 |
Correct |
6 ms |
32092 KB |
Output is correct |
11 |
Correct |
6 ms |
32092 KB |
Output is correct |
12 |
Correct |
6 ms |
32088 KB |
Output is correct |
13 |
Correct |
7 ms |
32092 KB |
Output is correct |
14 |
Correct |
6 ms |
32196 KB |
Output is correct |
15 |
Correct |
6 ms |
32092 KB |
Output is correct |
16 |
Correct |
7 ms |
32184 KB |
Output is correct |
17 |
Correct |
7 ms |
32088 KB |
Output is correct |
18 |
Correct |
6 ms |
32092 KB |
Output is correct |
19 |
Correct |
7 ms |
32092 KB |
Output is correct |
20 |
Correct |
6 ms |
32092 KB |
Output is correct |
21 |
Correct |
6 ms |
32092 KB |
Output is correct |
22 |
Correct |
6 ms |
32092 KB |
Output is correct |
23 |
Correct |
6 ms |
32088 KB |
Output is correct |
24 |
Correct |
6 ms |
32168 KB |
Output is correct |
25 |
Correct |
9 ms |
32092 KB |
Output is correct |
26 |
Correct |
7 ms |
32092 KB |
Output is correct |
27 |
Correct |
7 ms |
32092 KB |
Output is correct |
28 |
Correct |
8 ms |
32092 KB |
Output is correct |
29 |
Correct |
7 ms |
32196 KB |
Output is correct |
30 |
Correct |
7 ms |
32088 KB |
Output is correct |
31 |
Correct |
7 ms |
32088 KB |
Output is correct |
32 |
Correct |
8 ms |
32344 KB |
Output is correct |
33 |
Correct |
9 ms |
32348 KB |
Output is correct |
34 |
Correct |
9 ms |
32548 KB |
Output is correct |
35 |
Correct |
10 ms |
32344 KB |
Output is correct |
36 |
Correct |
10 ms |
32344 KB |
Output is correct |
37 |
Correct |
10 ms |
32348 KB |
Output is correct |
38 |
Correct |
14 ms |
32460 KB |
Output is correct |
39 |
Correct |
11 ms |
32348 KB |
Output is correct |
40 |
Correct |
8 ms |
32092 KB |
Output is correct |
41 |
Correct |
8 ms |
32092 KB |
Output is correct |
42 |
Correct |
8 ms |
32092 KB |
Output is correct |
43 |
Correct |
78 ms |
32348 KB |
Output is correct |
44 |
Correct |
64 ms |
32552 KB |
Output is correct |
45 |
Correct |
62 ms |
32348 KB |
Output is correct |
46 |
Correct |
10 ms |
32604 KB |
Output is correct |
47 |
Correct |
10 ms |
32604 KB |
Output is correct |
48 |
Correct |
9 ms |
32604 KB |
Output is correct |
49 |
Correct |
9 ms |
32860 KB |
Output is correct |
50 |
Correct |
9 ms |
32576 KB |
Output is correct |
51 |
Correct |
9 ms |
32604 KB |
Output is correct |
52 |
Correct |
10 ms |
32604 KB |
Output is correct |
53 |
Correct |
10 ms |
32604 KB |
Output is correct |
54 |
Correct |
11 ms |
32600 KB |
Output is correct |
55 |
Correct |
31 ms |
32604 KB |
Output is correct |
56 |
Correct |
265 ms |
36184 KB |
Output is correct |
57 |
Correct |
619 ms |
37460 KB |
Output is correct |
58 |
Correct |
701 ms |
38224 KB |
Output is correct |
59 |
Correct |
1654 ms |
39432 KB |
Output is correct |
60 |
Correct |
1633 ms |
40640 KB |
Output is correct |
61 |
Execution timed out |
2027 ms |
41300 KB |
Time limit exceeded |
62 |
Halted |
0 ms |
0 KB |
- |