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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#738740 | #9532. 长野原龙势流星群 | urosk | 0 | 117ms | 17980kb | C++17 | 1.9kb | 2024-11-12 19:49:44 | 2024-11-12 19:49:45 |
Judging History
answer
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include <bits/stdc++.h>
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define eb emplace_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}
#define si(a) (ll)(a.size())
using namespace std;
using ld = double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using pld = pair<ld,ld>;
#define mod 1
ll add(ll x,ll y){
x+=y;
if(x<0){
x%=mod;
x+=mod;
}else{
if(x>=mod) x%=mod;
}
return x;
}
ll mul(ll a,ll b){
a = add(a,0);
b = add(b,0);
ll ans = (a*b)%mod;
if(ans<0) ans+=mod;
return ans;
}
const ll maxn = 200005;
ll n;
ll a[maxn];
ll par[maxn];
/**
6
1 2 2 1 4
3 1 5 6 6 7
*/
vector<ll> g[maxn];
ll f[maxn],sz[maxn];
bool cmp(pll a,pll b) {
return a.fi*b.sc<b.fi*a.sc;
}
void dfs(ll u) {
f[u] = a[u];
sz[u] = 1;
vector<pll> v;
for(ll s : g[u]) {
dfs(s);
v.pb({f[s],sz[s]});
}
sort(all(v),cmp);
while(si(v)) {
pll p = v.back(); v.popb();
if(p.fi*sz[u]>=p.sc*f[u]) {
f[u]+=p.fi;
sz[u]+=p.sc;
}else break;
}
}
void tc(){
cin >> n;
cout<<fixed<<setprecision(10);
for(ll i = 2;i<=n;i++) cin >> par[i];
for(ll i = 2;i<=n;i++) g[par[i]].pb(i);
for(ll i = 1;i<=n;i++) cin >> a[i];
dfs(1);
for(ll i = 1;i<=n;i++) cout<<f[i]*1.0/sz[i]<<endl;
}
int main(){
ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
int t; t = 1;
while(t--){
tc();
}
return (0-0);
}
详细
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 14244kb
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:
878341451.1578947306 879173186.6363636255 848557303.2272727489 912609654.6666666269 872318573.5000000000 816339179.0000000000 850251397.5555555820 858217450.2352941036 812960827.3636363745 866017059.7777777910 693335785.3750000000 921947345.6666666269 994728511.5000000000 950304719.0000000000 808673...
result:
wrong answer 1st numbers differ - expected: '883838885.9230770', found: '878341451.1578947', error = '0.0062200'
Subtask #2:
score: 0
Wrong Answer
Test #32:
score: 0
Wrong Answer
time: 117ms
memory: 17980kb
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:
686880396.2941176891 563544686.1428571939 693705743.1515151262 618391182.7999999523 746642876.0000000000 806376230.0000000000 698219365.7419354916 699584745.7500000000 617426841.1935484409 700325141.0000000000 691212027.0000000000 722381415.0000000000 631630674.3333333731 857291392.5000000000 709515...
result:
wrong answer 1st numbers differ - expected: '792545632.4154930', found: '686880396.2941177', error = '0.1333239'
Subtask #3:
score: 0
Skipped
Dependency #1:
0%
Subtask #4:
score: 0
Skipped
Dependency #2:
0%