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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#605222#9101. Zayin and Busjiangzhihui#AC ✓176ms5980kbC++141.2kb2024-10-02 16:14:512024-10-02 16:14:52

Judging History

你现在查看的是最新测评结果

  • [2024-10-02 16:14:52]
  • 评测
  • 测评结果:AC
  • 用时:176ms
  • 内存:5980kb
  • [2024-10-02 16:14:51]
  • 提交

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

Tip: Click on the bar to expand more detailed information

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