QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#605222 | #9101. Zayin and Bus | jiangzhihui# | AC ✓ | 176ms | 5980kb | C++14 | 1.2kb | 2024-10-02 16:14:51 | 2024-10-02 16:14:52 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N=1e5+5;
struct node{
int p,v;
node(int p,int v):p(p),v(v){}
bool operator < (const node& o)const{
return v>o.v;
}
};
int dep[N],fa[N],n,a[N];
int cnt[N],b[N];
bool cmp(int x,int y){
return a[x]+x<a[y]+y;
}
void solve(){
cin>>n;
for(int i=1;i<=n;i++){
cnt[i]=0;
b[i]=i;
dep[i]=0;
}
for(int i=2;i<=n;i++){
cin>>fa[i];
dep[i]=dep[fa[i]]+1;
cnt[fa[i]]++;
}
for(int i=1;i<=n;i++){
cin>>a[i];
}
sort(b+1,b+1+n,cmp);
priority_queue<node> pq;
for(int i=1;i<=n;i++){
if(cnt[i]==0){
pq.push(node(i,dep[i]));
}
}
int ans=0;
for(int i=1;i<=n;i++){
int x=b[i];
node t=pq.top();
pq.pop();
if(fa[t.p]){
cnt[fa[t.p]]--;
if(cnt[fa[t.p]]==0){
pq.push(node(fa[t.p],dep[fa[t.p]]));
}
}
ans=max(ans,x+a[x]+t.v);
}
cout<<ans<<'\n';
}
int main(){
ios::sync_with_stdio(false);
int T;
cin>>T;
while(T--){
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3664kb
input:
14 1 1 1 2 1 3 2 1 1 1 2 1 1 2 2 1 2 1 2 1 1 3 2 1 3 1 2 1 1 4 2 1 4 1 3 1 1 1 1 1 3 1 2 1 1 1 3 1 1 1 3 2 3 1 2 1 3 2
output:
2 3 4 3 4 4 5 4 6 5 4 4 6 6
result:
ok 14 lines
Test #2:
score: 0
Accepted
time: 176ms
memory: 5980kb
input:
15 1000 1 2 2 1 1 1 4 8 1 7 7 7 9 3 4 7 15 18 18 4 6 11 19 7 6 1 9 13 2 21 28 6 17 24 24 2 28 5 32 24 23 8 3 26 15 28 25 34 46 41 33 16 46 11 7 2 13 53 12 59 52 53 51 52 31 41 63 18 55 49 55 62 15 19 23 67 18 37 2 4 23 75 58 55 14 84 20 3 7 89 82 15 53 77 60 25 97 69 5 40 54 24 72 10 87 90 99 43 71 ...
output:
98572828 100088663 99870474 100076153 99995412 100076982 99971239 100079684 99928633 100093408 99432584 100093568 99620300 100058966 99565256
result:
ok 15 lines