CSES - Datatähti 2023 alku

Submission details
Task:	Sadonkorjuu
Sender:	Arska123
Submission time:	2022-11-02 08:50:50 +0200
Language:	Rust
Status:	READY
Result:	33

Feedback
group	verdict	score
#1	ACCEPTED	33
#2	TIME LIMIT EXCEEDED	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 2	details
#2	ACCEPTED	0.00 s	1, 2	details
#3	ACCEPTED	0.00 s	1, 2	details
#4	ACCEPTED	0.00 s	1, 2	details
#5	ACCEPTED	0.00 s	1, 2	details
#6	ACCEPTED	0.00 s	1, 2	details
#7	TIME LIMIT EXCEEDED	--	2	details
#8	ACCEPTED	0.00 s	1, 2	details
#9	TIME LIMIT EXCEEDED	--	2	details
#10	ACCEPTED	0.00 s	1, 2	details
#11	ACCEPTED	0.17 s	2	details
#12	TIME LIMIT EXCEEDED	--	2	details
#13	TIME LIMIT EXCEEDED	--	2	details
#14	ACCEPTED	0.15 s	2	details
#15	ACCEPTED	0.01 s	1, 2	details
#16	ACCEPTED	0.00 s	1, 2	details
#17	ACCEPTED	0.00 s	1, 2	details
#18	ACCEPTED	0.00 s	1, 2	details
#19	ACCEPTED	0.00 s	1, 2	details
#20	ACCEPTED	0.00 s	1, 2	details
#21	TIME LIMIT EXCEEDED	--	2	details
#22	TIME LIMIT EXCEEDED	--	2	details
#23	TIME LIMIT EXCEEDED	--	2	details
#24	ACCEPTED	0.00 s	1, 2	details
#25	TIME LIMIT EXCEEDED	--	2	details
#26	ACCEPTED	0.00 s	1, 2	details
#27	TIME LIMIT EXCEEDED	--	2	details
#28	ACCEPTED	0.00 s	1, 2	details
#29	TIME LIMIT EXCEEDED	--	2	details
#30	ACCEPTED	0.00 s	1, 2	details
#31	TIME LIMIT EXCEEDED	--	2	details

Code

use std::{io::stdin, collections::BinaryHeap, cmp::Reverse};

fn main() {
    let mut buf = String::new();
    stdin().read_line(&mut buf).unwrap(); 

    let n: u32 = buf.trim().parse().unwrap();

    let mut cities = Vec::new();
    buf.clear();
    stdin().read_line(&mut buf).unwrap();
    for city in buf.split_whitespace() {
        cities.push(match city {
            "1" => true,
            "0" => false,
            _ => panic!(),
        });
    }

    let mut roads = vec![vec![]; n as usize];
    for _ in 0..n-1 {
        buf.clear();
        stdin().read_line(&mut buf).unwrap();
        let mut iter = buf.split_whitespace();
        let mut a: usize = iter.next().unwrap().parse().unwrap();
        let mut b: usize = iter.next().unwrap().parse().unwrap();
        let c: u32 = iter.next().unwrap().parse().unwrap();
        a -= 1;
        b -= 1;
        roads[a].push((b, c));
        roads[b].push((a, c));
    }

    let mut q = BinaryHeap::new();
    let mut shortcut = vec![u32::MAX; n as usize];
    let mut total = 0;

    for (city, &field) in cities.iter().enumerate() {
        if !field {
            shortcut[city] = 0;
        }
    }

    for (city, &field) in cities.iter().enumerate() {
        if !field {
            continue; 
        }

        if shortcut[city] != u32::MAX {
            total += shortcut[city];
            continue;
        }

        q.clear();
        let mut dist = vec![u32::MAX; n as usize];
        let mut predecessor = vec![u32::MAX; n as usize];  
        dist[city] = 0;
        q.push(Reverse((0_u32, city)));
        'dijkstra: while let Some(Reverse((weight, curr))) = q.pop() {
            if shortcut[curr] != u32::MAX {
                let mut v = curr;
                while v != u32::MAX as usize {
                    if shortcut[v] == u32::MAX {
                        let d = weight - dist[v];
                        shortcut[v] = d;
                    }

                    v = predecessor[v] as usize;
                }
                total += weight;
                break 'dijkstra;
            }
            for &(dest, road_weight) in &roads[curr] {
                if dist[dest] > dist[curr] + road_weight {
                    dist[dest] = if shortcut[dest] != u32::MAX {
                        dist[curr] + road_weight + shortcut[dest]
                    } else {
                       dist[curr] + road_weight
                    };
                    predecessor[dest] = curr as u32;
                    q.push(Reverse((dist[dest], dest)));    
                }
            }
        }
    }
    println!("{}", total);
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
`1 0` view save

correct output
`0` view save

user output
`0` view save

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
`5 0 0 0 0 0 1 2 1 2 3 2 3 4 3 ...` view save

correct output
`0` view save

user output
`0` view save

Test 3

Group: 1, 2

Verdict: ACCEPTED

input
`4 1 0 1 1 1 2 10 2 3 20 2 4 30` view save

correct output
`60` view save

user output
`60` view save

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
`5 0 1 1 1 0 1 2 10 2 3 20 3 4 30 ...` view save

correct output
`80` view save

user output
`80` view save

Test 5

Group: 1, 2

Verdict: ACCEPTED

input
`5 0 1 0 1 1 1 2 1 2 3 5 3 4 3 ...` view save

correct output
`6` view save

user output
`6` view save

Test 6

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`5506363` view save

user output
`5506363` view save

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1795118520` view save

user output
(empty)

Test 8

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 0 1 0 1 1 0 1 0 1 1 0 0 0 1 ...` view save

correct output
`293576` view save

user output
`293576` view save

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`816932444` view save

user output
(empty)

Test 10

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`3089` view save

user output
`3089` view save

Test 11

Group: 2

Verdict: ACCEPTED

input
`200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`40839` view save

user output
`40839` view save

Test 12

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`5683983203973` view save

user output
(empty)

Test 13

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 0 1 1 1 1 1 1 0 0 0 1 1 0 1 0 ...` view save

correct output
`58572993` view save

user output
(empty)

Test 14

Group: 2

Verdict: ACCEPTED

input
`200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`32755` view save

user output
`32755` view save

Test 15

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`126238345` view save

user output
`126238345` view save

Test 16

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 0 0 1 0 1 1 1 0 0 1 0 1 1 0 ...` view save

correct output
`278678` view save

user output
`278678` view save

Test 17

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 ...` view save

correct output
`34929` view save

user output
`34929` view save

Test 18

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1543963` view save

user output
`1543963` view save

Test 19

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`39606` view save

user output
`39606` view save

Test 20

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 0 1 0 1 0 0 0 0 1 1 0 0 0 1 ...` view save

correct output
`321598` view save

user output
`321598` view save

Test 21

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`978670626` view save

user output
(empty)

Test 22

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...` view save

correct output
`375218` view save

user output
(empty)

Test 23

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 0 0 0 0 0 1 0 1 0 1 1 ...` view save

correct output
`60422556` view save

user output
(empty)

Test 24

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`291990` view save

user output
`291990` view save

Test 25

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`59607954` view save

user output
(empty)

Test 26

Group: 1, 2

Verdict: ACCEPTED

input
`1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`990` view save

user output
`990` view save

Test 27

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`199982` view save

user output
(empty)

Test 28

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`7987` view save

user output
`7987` view save

Test 29

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`3137875` view save

user output
(empty)

Test 30

Group: 1, 2

Verdict: ACCEPTED

input
`1000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`4657693` view save

user output
`4657693` view save

Test 31

Group: 2

Verdict: TIME LIMIT EXCEEDED

input
`200000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

correct output
`1652889357` view save

user output
(empty)

Datatähti 2023 alku

Sadonkorjuu

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Test 31

Tasks

Submissions (Arska123)