CSES - NOI 2019

CSES - NOI 2019 - Results

Submission details
Task:	Distance Code
Sender:	Luis Galan
Submission time:	2019-03-06 15:55:47 +0200
Language:	Java
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0
#3	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.30 s	1, 2, 3	details
#2	WRONG ANSWER	0.23 s	1, 2, 3	details
#3	WRONG ANSWER	0.22 s	1, 2, 3	details
#4	WRONG ANSWER	0.23 s	1, 2, 3	details
#5	WRONG ANSWER	0.30 s	1, 2, 3	details
#6	ACCEPTED	0.30 s	1, 2, 3	details
#7	WRONG ANSWER	0.23 s	1, 2, 3	details
#8	WRONG ANSWER	0.23 s	1, 2, 3	details
#9	WRONG ANSWER	0.23 s	1, 2, 3	details
#10	WRONG ANSWER	0.22 s	1, 2, 3	details
#11	WRONG ANSWER	0.24 s	1, 2, 3	details
#12	WRONG ANSWER	0.30 s	2, 3	details
#13	WRONG ANSWER	0.28 s	2, 3	details
#14	WRONG ANSWER	0.28 s	2, 3	details
#15	WRONG ANSWER	0.28 s	2, 3	details
#16	TIME LIMIT EXCEEDED	--	3	details
#17	WRONG ANSWER	0.82 s	3	details
#18	WRONG ANSWER	0.81 s	3	details
#19	WRONG ANSWER	0.81 s	3	details
#20	WRONG ANSWER	0.24 s	1, 2, 3	details

Code

import java.util.Scanner;
import java.util.ArrayList;

public class distance {

    public static class Node {
        ArrayList<Node> children;
        Node parent;
        int id;

        public Node(int id) {
            children = new ArrayList<>();
            this.id = id;
        }
    }

    public static void encode(Node root) {
        // remove nodes depth-first
        for (int i = 0; i < root.children.size(); i++) {
            encode(root.children.get(i));
        }
        System.out.println(root.id + 1);
    }

    public static int decode(int[] distances, Node[] nodes, int pIndex) {
        // loop through nodes that belong to parent
        int i = pIndex - 1;
        while (i >= 0 && distances[i] == 1 + distances[pIndex]) {
            nodes[pIndex].children.add(nodes[i]);
            System.out.println((nodes[i].id + 1) + " " + (nodes[pIndex].id + 1));
            i = decode(distances, nodes, i);
        }
        return i;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int t = Integer.parseInt(scanner.next());
        int n = Integer.parseInt(scanner.next());

        Node[] nodes = new Node[n];
        for (int i = 0; i < nodes.length; i++) {
            nodes[i] = new Node(i);
        }

        if (t == 1) { // encode
            for (int i = 0; i < n - 1; i++) {
                int a = Integer.parseInt(scanner.next());
                int b = Integer.parseInt(scanner.next());
                nodes[a - 1].children.add(nodes[b - 1]);
                nodes[b - 1].parent = nodes[a - 1];
            }
            Node root = nodes[0];
            while (root.parent != null) {
                root = root.parent;
            }
            encode(root);
        } else { // decode
            // get distances
            int[] distances = new int[n + 1]; // add 0 as last element
            for (int i = 0; i < n - 1; i++) {
                distances[i] = Integer.parseInt(scanner.next());
            }
            
            // run decode with index = n - 1
            decode(distances, nodes, n - 1);
        }

        scanner.close();
    }
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 2 2 1` view save

correct output
(empty)

user output
`1 2` view save

Test 2

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 3 3 1 2 1` view save

correct output
(empty)

user output
`1 2` view save

Test 3

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 4 3 2 2 1 4 1` view save

correct output
(empty)

user output
`1 4` view save

Test 4

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 4 2 3 3 4 1 3` view save

correct output
(empty)

user output
`4 3 1` view save

Test 5

Group: 1, 2, 3

Verdict: WRONG ANSWER

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

correct output
(empty)

user output
`4 5 3 4 2 5 1 5` view save

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

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

correct output
(empty)

user output
`4 5 3 5 2 5 1 2` view save

Test 7

Group: 1, 2, 3

Verdict: WRONG ANSWER

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

correct output
(empty)

user output
`3 2 4 1` view save

Test 8

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 10 9 3 8 9 2 9 ...` view save

correct output
(empty)

user output
`3 7 6 5 4 ...` view save

Test 9

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 10 9 2 5 8 7 1 ...` view save

correct output
(empty)

user output
`2 8 6 1 7 ...` view save

Test 10

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 10 10 4 9 1 4 7 ...` view save

correct output
(empty)

user output
`5 2 6 7 1 ...` view save

Test 11

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 10 2 6 4 3 3 5 ...` view save

correct output
(empty)

user output
`8 6 2 1` view save

Test 12

Group: 2, 3

Verdict: WRONG ANSWER

input
`1 500 10 6 6 255 6 428 ...` view save

correct output
(empty)

user output
`255 428 108 238 437 ...` Truncated

Test 13

Group: 2, 3

Verdict: WRONG ANSWER

input
`1 500 152 466 451 313 158 479 ...` view save

correct output
(empty)

user output
`243 47 1` view save

Test 14

Group: 2, 3

Verdict: WRONG ANSWER

input
`1 500 109 440 330 190 443 161 ...` view save

correct output
(empty)

user output
`20 217 1` view save

Test 15

Group: 2, 3

Verdict: WRONG ANSWER

input
`1 500 144 373 257 233 341 318 ...` view save

correct output
(empty)

user output
`270 70 218 488 405 ...` view save

Test 16

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`1 100000 54983 75172 93807 75172 44082 75172 ...` view save

correct output
(empty)

user output
(empty)

Test 17

Group: 3

Verdict: WRONG ANSWER

input
`1 100000 88863 19059 86423 76688 98536 95984 ...` view save

correct output
(empty)

user output
`85047 85005 1` view save

Test 18

Group: 3

Verdict: WRONG ANSWER

input
`1 100000 59979 6389 19097 24999 27846 82330 ...` view save

correct output
(empty)

user output
`60473 41037 1` view save

Test 19

Group: 3

Verdict: WRONG ANSWER

input
`1 100000 58761 66001 25102 51081 98625 67861 ...` view save

correct output
(empty)

user output
`30351 50013 1` view save

Test 20

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`1 6 2 1 3 2 4 2 ...` view save

correct output
(empty)

user output
`1 2 4` view save

NOI 2019

Distance Code

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

Tasks

Submissions (Luis Galan)