CSES - Datatähti 2024 alku - Results
Submission details
Task:Laskettelukeskus
Sender:axka
Submission time:2023-11-06 13:55:58 +0200
Language:Rust
Status:READY
Result:53
Feedback
groupverdictscore
#1ACCEPTED53
#20
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2details
#2ACCEPTED0.00 s1, 2details
#3ACCEPTED0.00 s1, 2details
#4--2details
#5--2details
#6ACCEPTED0.00 s1, 2details
#7--2details
#8ACCEPTED0.00 s1, 2details
#9--2details
#10ACCEPTED0.00 s1, 2details
#11--2details
#12ACCEPTED0.00 s1, 2details
#13--2details

Code

use std::io::stdin;
/// Input:
/// 5
/// 1 2
/// 1 3
/// 3 4
/// 3 5
/// 0 2 4 3 1
/// output:
/// 6
type RinneId = usize;
struct Polku(RinneId, RinneId);
#[derive(Clone, Debug)]
struct Rinne {
#[allow(dead_code)]
debug_id: RinneId,
suorat_rinteet_alas: Vec<Rinne>,
omat_aurauskerrat: usize,
}
impl Rinne {
fn new_compute_children(id: RinneId, polut: &[Polku], aurauskerrat: &[usize]) -> Self {
let suorat_rinteet_alas = polut
.iter()
.filter(|polku| polku.0 == id)
.map(|polku| Rinne::new_compute_children(polku.1, polut, aurauskerrat))
.collect();
Self {
debug_id: id,
suorat_rinteet_alas,
omat_aurauskerrat: aurauskerrat[id - 1],
}
}
fn max_aurauskerat(&self) -> usize {
self.omat_aurauskerrat.max(
self.suorat_rinteet_alas
.iter()
.map(Rinne::max_aurauskerat)
.sum()
)
}
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut lines = stdin().lines();
let rinteet: usize = lines.next().unwrap()?.parse()?;
let polut: Result<Vec<Polku>, Box<dyn std::error::Error>> = lines
.by_ref()
.take(rinteet - 1)
.map(|rivi| {
let rivi = rivi?;
// Lue luvut rivistä
let mut luvut = rivi.split_ascii_whitespace().map(|s| s.parse());
Ok(Polku(luvut.next().unwrap()?, luvut.next().unwrap()?))
})
.collect();
let polut = polut?;
let aurauskerrat = lines
.next()
.unwrap()?
.split_ascii_whitespace()
.map(|s| s.parse())
.collect::<Result<Vec<usize>, _>>()?;
assert_eq!(aurauskerrat.len(), rinteet);
let tree = Rinne::new_compute_children(1, &polut, &aurauskerrat);
let lumiauroja = tree.max_aurauskerat();
println!("{lumiauroja}");
Ok(())
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
5
1 2
1 3
3 4
3 5
...

correct output
6

user output
6

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
100
1 73
1 64
64 23
1 88
...

correct output
2675

user output
2675

Test 3

Group: 1, 2

Verdict: ACCEPTED

input
100
1 36
36 56
56 59
36 97
...

correct output
2808

user output
2808

Test 4

Group: 2

Verdict:

input
100000
1 45452
1 74209
45452 78960
45452 79820
...

correct output
28399367694319

user output
(empty)

Test 5

Group: 2

Verdict:

input
100000
1 31165
1 23263
31165 89516
31165 53122
...

correct output
28546840313799

user output
(empty)

Test 6

Group: 1, 2

Verdict: ACCEPTED

input
100
1 79
79 9
79 45
45 10
...

correct output
0

user output
0

Test 7

Group: 2

Verdict:

input
100000
1 66038
1 56789
56789 7403
66038 69542
...

correct output
0

user output
(empty)

Test 8

Group: 1, 2

Verdict: ACCEPTED

input
100
1 2
2 3
3 4
4 5
...

correct output
100

user output
100

Test 9

Group: 2

Verdict:

input
100000
1 2
2 3
3 4
4 5
...

correct output
1000000000

user output
(empty)

Test 10

Group: 1, 2

Verdict: ACCEPTED

input
100
1 2
1 3
2 4
2 5
...

correct output
2809

user output
2809

Test 11

Group: 2

Verdict:

input
100000
1 2
1 3
2 4
2 5
...

correct output
26053917212428

user output
(empty)

Test 12

Group: 1, 2

Verdict: ACCEPTED

input
100
1 2
1 3
2 4
2 5
...

correct output
5000

user output
5000

Test 13

Group: 2

Verdict:

input
100000
1 2
1 3
2 4
2 5
...

correct output
50000000000000

user output
(empty)