#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define LL long long
#define st first
#define nd second
#define endl '\n'
using namespace std;
const int MAXN=300005;
int n,m,p[MAXN],c[MAXN];
LL a[MAXN],b[MAXN];
priority_queue<LL> pq[MAXN];
void swap2(int x,int y) {
if(pq[x].size()<pq[y].size()) {
pq[x].swap(pq[y]);
swap(a[x],a[y]);
swap(b[x],b[y]);
}
}
void merge(int x,int y) {
swap2(x,y);
a[x]+=a[y];
b[x]+=b[y];
while(!pq[y].empty()) {
pq[x].push(pq[y].top());
pq[y].pop();
}
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>n>>m;
for(int i=2;i<=n+m;++i) {
cin>>p[i]>>c[i];
if(i>n) {
a[i]=1;
b[i]=-c[i];
pq[i].push(c[i]);
pq[i].push(c[i]);
merge(p[i],i);
}
}
for(int i=n;i>1;--i) {
while(a[i]>1) {
--a[i];
b[i]+=pq[i].top();
pq[i].pop();
}
LL t1=pq[i].top();
pq[i].pop();
LL t2=pq[i].top();
pq[i].pop();
pq[i].push(t2+c[i]);
pq[i].push(t1+c[i]);
b[i]-=c[i];
merge(p[i],i);
}
while(a[1]>1) {
--a[1];
b[1]+=pq[1].top();
pq[1].pop();
}
cout<<pq[1].top()+b[1]<<endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 2 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 3 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 4 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 7 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 9 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18584 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 2 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 3 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 4 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 6 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 7 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 8 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 9 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 11 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 12 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 14 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 15 |
Correct |
6 ms |
18584 KB |
Output is correct |
| 16 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 17 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 18 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 19 |
Correct |
0 ms |
18584 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 2 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 3 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 4 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 7 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 9 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 11 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 12 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 14 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 15 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 16 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 17 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 18 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 19 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 20 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 21 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 22 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 23 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 24 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 25 |
Correct |
6 ms |
18584 KB |
Output is correct |
| 26 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 27 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 28 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 29 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 30 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 31 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 32 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 33 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 34 |
Correct |
0 ms |
18724 KB |
Output is correct |
| 35 |
Correct |
6 ms |
18716 KB |
Output is correct |
| 36 |
Correct |
0 ms |
18716 KB |
Output is correct |
| 37 |
Correct |
3 ms |
18716 KB |
Output is correct |
| 38 |
Correct |
0 ms |
18716 KB |
Output is correct |
| 39 |
Correct |
3 ms |
18716 KB |
Output is correct |
| 40 |
Correct |
6 ms |
18584 KB |
Output is correct |
| 41 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 42 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 43 |
Correct |
6 ms |
18728 KB |
Output is correct |
| 44 |
Correct |
3 ms |
18716 KB |
Output is correct |
| 45 |
Correct |
0 ms |
18716 KB |
Output is correct |
| 46 |
Correct |
3 ms |
19008 KB |
Output is correct |
| 47 |
Correct |
6 ms |
19028 KB |
Output is correct |
| 48 |
Correct |
3 ms |
18872 KB |
Output is correct |
| 49 |
Correct |
3 ms |
18864 KB |
Output is correct |
| 50 |
Correct |
3 ms |
18872 KB |
Output is correct |
| 51 |
Correct |
0 ms |
18872 KB |
Output is correct |
| 52 |
Correct |
0 ms |
18864 KB |
Output is correct |
| 53 |
Correct |
0 ms |
18868 KB |
Output is correct |
| 54 |
Correct |
0 ms |
18908 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 2 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 3 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 4 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 7 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 9 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 11 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 12 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 14 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 15 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 16 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 17 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 18 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 19 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 20 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 21 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 22 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 23 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 24 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 25 |
Correct |
6 ms |
18584 KB |
Output is correct |
| 26 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 27 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 28 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 29 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 30 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 31 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 32 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 33 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 34 |
Correct |
0 ms |
18724 KB |
Output is correct |
| 35 |
Correct |
6 ms |
18716 KB |
Output is correct |
| 36 |
Correct |
0 ms |
18716 KB |
Output is correct |
| 37 |
Correct |
3 ms |
18716 KB |
Output is correct |
| 38 |
Correct |
0 ms |
18716 KB |
Output is correct |
| 39 |
Correct |
3 ms |
18716 KB |
Output is correct |
| 40 |
Correct |
6 ms |
18584 KB |
Output is correct |
| 41 |
Correct |
0 ms |
18584 KB |
Output is correct |
| 42 |
Correct |
3 ms |
18584 KB |
Output is correct |
| 43 |
Correct |
6 ms |
18728 KB |
Output is correct |
| 44 |
Correct |
3 ms |
18716 KB |
Output is correct |
| 45 |
Correct |
0 ms |
18716 KB |
Output is correct |
| 46 |
Correct |
3 ms |
19008 KB |
Output is correct |
| 47 |
Correct |
6 ms |
19028 KB |
Output is correct |
| 48 |
Correct |
3 ms |
18872 KB |
Output is correct |
| 49 |
Correct |
3 ms |
18864 KB |
Output is correct |
| 50 |
Correct |
3 ms |
18872 KB |
Output is correct |
| 51 |
Correct |
0 ms |
18872 KB |
Output is correct |
| 52 |
Correct |
0 ms |
18864 KB |
Output is correct |
| 53 |
Correct |
0 ms |
18868 KB |
Output is correct |
| 54 |
Correct |
0 ms |
18908 KB |
Output is correct |
| 55 |
Correct |
6 ms |
18984 KB |
Output is correct |
| 56 |
Correct |
26 ms |
20572 KB |
Output is correct |
| 57 |
Correct |
53 ms |
21812 KB |
Output is correct |
| 58 |
Correct |
63 ms |
22876 KB |
Output is correct |
| 59 |
Correct |
79 ms |
24196 KB |
Output is correct |
| 60 |
Correct |
126 ms |
25304 KB |
Output is correct |
| 61 |
Correct |
156 ms |
27044 KB |
Output is correct |
| 62 |
Correct |
166 ms |
27744 KB |
Output is correct |
| 63 |
Correct |
209 ms |
29260 KB |
Output is correct |
| 64 |
Correct |
216 ms |
29272 KB |
Output is correct |
| 65 |
Correct |
89 ms |
18584 KB |
Output is correct |
| 66 |
Correct |
109 ms |
18584 KB |
Output is correct |
| 67 |
Correct |
79 ms |
18584 KB |
Output is correct |
| 68 |
Correct |
143 ms |
26384 KB |
Output is correct |
| 69 |
Correct |
193 ms |
27024 KB |
Output is correct |
| 70 |
Correct |
163 ms |
27020 KB |
Output is correct |
| 71 |
Correct |
193 ms |
44380 KB |
Output is correct |
| 72 |
Correct |
233 ms |
44336 KB |
Output is correct |
| 73 |
Correct |
233 ms |
40392 KB |
Output is correct |
| 74 |
Correct |
186 ms |
41064 KB |
Output is correct |
| 75 |
Correct |
239 ms |
40972 KB |
Output is correct |
| 76 |
Correct |
179 ms |
41036 KB |
Output is correct |
| 77 |
Correct |
216 ms |
41120 KB |
Output is correct |
| 78 |
Correct |
203 ms |
39784 KB |
Output is correct |
| 79 |
Correct |
179 ms |
38992 KB |
Output is correct |
