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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#718356 | #9532. 长野原龙势流星群 | konata2828 | 0 | 0ms | 0kb | C++98 | 1.3kb | 2024-11-06 20:19:18 | 2024-11-06 20:19:20 |
answer
// Hydro submission #672b5ec2a05967896663a54e@1730895555457
#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 10;
typedef pair <double, int> PDI;
priority_queue <PDI> q;
int f[N], fa[N], siz[N];
long long a[N];
double ans[N];
bool vis[N];
int read()
{
int r = 0, c = getchar(), f = 1;
while (!isdigit(c))
{
if (c == '-') f = -1;
c = getchar();
}
while (isdigit(c)) r = (r << 1) + (r << 3) + (c ^ 48), c = getchar();
return r * f;
}
int find(int x)
{
while (x != f[x]) x = f[x] = f[f[x]];
return x;
}
int main()
{
int n = read();
for (int i = 2; i <= n; ++i) fa[i] = read();
for (int i = 1; i <= n; ++i) a[i] = read(), siz[i] = 1, f[i] = i, q.push({a[i], i});
while (!q.empty())
{
int x = q.top().second;
q.pop();
if (vis[x]) continue;
vis[x] = 1;
ans[x] = a[x] * 1.0 / siz[x];
if (fa[x])
{
int fat = find(fa[x]);
if (a[fat] * 1.0 / siz[fat] <= a[x] * 1.0 / siz[x])
{
a[fat] += a[x];
siz[fat] += siz[x];
f[x] = fa[x];
q.push({a[fat] * 1.0 / siz[fat], a[fat]});
}
}
}
for (int i = 1; i <= n; ++i) printf("%.7lf\n", ans[i]);
return 0;
}
Details
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Subtask #1:
score: 0
Runtime Error
Test #1:
score: 0
Runtime Error
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:
result:
Subtask #2:
score: 0
Runtime Error
Test #32:
score: 0
Runtime Error
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:
result:
Subtask #3:
score: 0
Skipped
Dependency #1:
0%
Subtask #4:
score: 0
Skipped
Dependency #2:
0%