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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#697888#9532. 长野原龙势流星群XXG0 104ms16348kbC++141.5kb2024-11-01 16:16:292024-11-01 16:16:30

Judging History

你现在查看的是最新测评结果

  • [2024-11-01 16:16:30]
  • 评测
  • 测评结果:0
  • 用时:104ms
  • 内存:16348kb
  • [2024-11-01 16:16:29]
  • 提交

answer

//
// Created by 15411 on 2024/10/12.
//
#include<bits/stdc++.h>

#define ll long long
#define int long long
#define endl "\n"
#define Endl "\n"
#define emdl "\n"
#define Emdl "\n"
#define yes cout<<"YES\n";
#define no cout<<"NO\n";
using namespace std;
const int MAX = 2e5 + 7;
const int INF = 1e18 + 7;
struct p {
    double sum;//平均值
    ll val;//总价值
    ll num;//个数
} dp[MAX];
vector<ll> edge[MAX];

bool cmp(p x, p y) {
    return x.sum > y.sum;
}

void dfs(ll u) {
    vector<p> now;
    for (auto v: edge[u]) {
        dfs(v);
        now.push_back(dp[v]);
    }
    sort(now.begin(), now.end(), cmp);
    for (auto nxt: now) {
        ll val = dp[u].val + nxt.val;
        ll num = dp[u].num + nxt.num;
        double sum = 1.0 * val / num;
        if (sum > dp[u].sum) {
            dp[u].num = num;
            dp[u].val = val;
            dp[u].sum = sum;
        }
    }
}

void solve() {
    ll n;
    cin >> n;
    for (ll i = 2; i <= n; i++) {
        ll u;
        cin >> u;
        edge[u].push_back(i);
    }
    for (ll i = 1; i <= n; i++) {
        cin >> dp[i].val;
        dp[i].num = 1;
        dp[i].sum = dp[i].val / dp[i].num;
    }
    dfs(1);
    for (ll i = 1; i <= n; i++) {
        cout << dp[i].sum << endl;
    }
}

signed main() {
    ios::sync_with_stdio(false);//cin.tie(0);cout.tie(0);
    ll t;
    t = 1;
//    cin >> t;
    while (t--)
        solve();
    return 0;
}

詳細信息

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 9524kb

input:

2000
1 2 2 4 5 2 3 6 4 2 7 2 8 14 8 12 1 14 4 14 8 18 9 2 7 22 20 22 14 29 28 16 6 21 23 6 21 14 13 9 1 4 18 13 2 39 21 33 18 20 38 27 27 1 49 5 51 3 31 24 10 42 2 44 13 9 35 66 27 60 67 59 29 40 53 2 33 43 26 43 62 16 78 45 14 10 73 69 41 35 25 26 2 70 54 1 54 48 5 36 44 28 90 29 51 51 93 82 95 45 ...

output:

8.78341e+08
8.79173e+08
8.48557e+08
9.1261e+08
8.72319e+08
8.16339e+08
8.50251e+08
8.58217e+08
8.12961e+08
8.66017e+08
6.93336e+08
9.21947e+08
9.94729e+08
9.50305e+08
8.08673e+08
8.66832e+08
9.63097e+08
9.1911e+08
7.75287e+08
8.4974e+08
9.04945e+08
8.74464e+08
6.99283e+08
8.22773e+08
7.45417e+08
7.9...

result:

wrong answer 1st numbers differ - expected: '883838885.9230770', found: '878341000.0000000', error = '0.0062205'

Subtask #2:

score: 0
Wrong Answer

Test #32:

score: 0
Wrong Answer
time: 104ms
memory: 16348kb

input:

200000
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 52...

output:

6.8688e+08
5.63545e+08
6.93706e+08
6.18391e+08
7.46643e+08
8.06376e+08
6.98219e+08
6.99585e+08
6.17427e+08
7.00325e+08
6.91212e+08
7.22381e+08
6.31631e+08
8.57291e+08
7.09516e+08
6.20735e+08
8.54702e+08
6.33277e+08
6.86188e+08
9.81485e+08
6.86967e+08
5.6009e+08
6.82334e+08
6.91833e+08
6.69207e+08
6....

result:

wrong answer 1st numbers differ - expected: '792545632.4154930', found: '686880000.0000000', error = '0.1333244'

Subtask #3:

score: 0
Skipped

Dependency #1:

0%

Subtask #4:

score: 0
Skipped

Dependency #2:

0%