CSES - Datatähti 2026 alku

Submission details
Task:	Hypyt
Sender:	20mins
Submission time:	2025-11-08 20:11:54 +0200
Language:	Java
Status:	READY
Result:	0

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

Test results
test	verdict	time	group
#1	WRONG ANSWER	0.13 s	1, 2, 3, 4, 5	details
#2	WRONG ANSWER	0.15 s	1, 2, 3, 4, 5	details
#3	WRONG ANSWER	0.14 s	1, 2, 3, 4, 5	details
#4	WRONG ANSWER	0.14 s	1, 2, 3, 4, 5	details
#5	ACCEPTED	0.14 s	1, 2, 3, 4, 5	details
#6	WRONG ANSWER	0.46 s	2, 5	details
#7	WRONG ANSWER	0.41 s	2, 5	details
#8	WRONG ANSWER	0.35 s	2, 5	details
#9	TIME LIMIT EXCEEDED	--	3, 4, 5	details
#10	TIME LIMIT EXCEEDED	--	3, 4, 5	details
#11	TIME LIMIT EXCEEDED	--	3, 4, 5	details
#12	TIME LIMIT EXCEEDED	--	4, 5	details
#13	TIME LIMIT EXCEEDED	--	4, 5	details
#14	TIME LIMIT EXCEEDED	--	4, 5	details
#15	TIME LIMIT EXCEEDED	--	5	details
#16	TIME LIMIT EXCEEDED	--	5	details
#17	TIME LIMIT EXCEEDED	--	5	details
#18	TIME LIMIT EXCEEDED	--	5	details
#19	TIME LIMIT EXCEEDED	--	5	details
#20	TIME LIMIT EXCEEDED	--	5	details
#21	TIME LIMIT EXCEEDED	--	5	details
#22	ACCEPTED	0.14 s	1, 2, 3, 4, 5	details
#23	ACCEPTED	0.14 s	1, 2, 3, 4, 5	details
#24	TIME LIMIT EXCEEDED	--	5	details
#25	TIME LIMIT EXCEEDED	--	5	details
#26	TIME LIMIT EXCEEDED	--	5	details
#27	TIME LIMIT EXCEEDED	--	5	details

Compiler report

Note: input/jumps2.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

Code

import java.util.*;

public class jumps2 {
    static TreeSet<Integer>[] r_safespaces;
    static TreeSet<Integer>[] c_safespaces;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int q = sc.nextInt();
        sc.nextLine();

        String[] grid = new String[n];
        for (int i = 0; i < n; i++) grid[i] = sc.nextLine().trim();

        int[][] queries = new int[q][4];
        for (int i = 0; i < q; i++) {
            queries[i][0] = sc.nextInt();
            queries[i][1] = sc.nextInt();
            queries[i][2] = sc.nextInt();
            queries[i][3] = sc.nextInt();
        }

        r_safespaces = new TreeSet[n + 1];
        c_safespaces = new TreeSet[m + 1];
        for (int i = 0; i <= n; i++) r_safespaces[i] = new TreeSet<>();
        for (int i = 0; i <= m; i++) c_safespaces[i] = new TreeSet<>();

        for (int r = 1; r <= n; r++) {
            String row = grid[r - 1];
            for (int c = 1; c <= m; c++) {
                if (row.charAt(c - 1) == '.') {
                    r_safespaces[r].add(c);
                    c_safespaces[c].add(r);
                }
            }
        }

        for (int[] query : queries) {
            System.out.println(jump(query[0], query[1], query[2], query[3]));
        }
    }

    static int jump(int y1, int x1, int y2, int x2) {
        if (y1 == y2 && x1 == x2) return 0;

        Deque<int[]> queue = new ArrayDeque<>();
        queue.addLast(new int[]{0, y1, x1, 0});
        queue.addLast(new int[]{1, x1, y1, 0});

        while (!queue.isEmpty()) {
            int[] e = queue.removeFirst();
            int type = e[0], id = e[1], pos = e[2], dist = e[3];

            if (type == 0) {
                if (id == y2 && r_safespaces[id].contains(x2)) return dist + 1;
                TreeSet<Integer> rowSet = r_safespaces[id];
                Iterator<Integer> it = rowSet.iterator();
                while (it.hasNext()) {
                    int c = it.next();
                    queue.addLast(new int[]{1, c, id, dist + 1});
                    it.remove();
                }
            } else {
                if (id == x2 && c_safespaces[id].contains(y2)) return dist + 1;
                TreeSet<Integer> colSet = c_safespaces[id];
                Iterator<Integer> it = colSet.iterator();
                while (it.hasNext()) {
                    int r = it.next();
                    queue.addLast(new int[]{0, r, id, dist + 1});
                    it.remove();
                }
            }
        }
        return -1;
    }
}

Test details

Test 1 (public)

Group: 1, 2, 3, 4, 5

Verdict: WRONG ANSWER

input
`4 6 5 ..** ...* ****. ... ...` view save

correct output
`1 0 3 3 -1` view save

user output
`1 0 3 -1 -1` view save

Feedback: Incorrect character on line 4 col 1: expected "3", got "-1"

Test 2

Group: 1, 2, 3, 4, 5

Verdict: WRONG ANSWER

input
`10 10 10 .......... ......... ......... .....*.. ...` view save

correct output
`1 2 1 2 2 ...` view save

user output
`1 2 1 3 -1 ...` view save

Feedback: Incorrect character on line 4 col 1: expected "2", got "3"

Test 3

Group: 1, 2, 3, 4, 5

Verdict: WRONG ANSWER

input
`10 10 10 .... ****.... .... ...*.. ...` view save

correct output
`1 2 2 1 2 ...` view save

user output
`1 2 2 1 2 ...` view save

Feedback: Incorrect character on line 6 col 1: expected "2", got "-1"

Test 4

Group: 1, 2, 3, 4, 5

Verdict: WRONG ANSWER

input
`10 10 10 **..** ******** .******* .... ...` view save

correct output
`3 4 2 3 4 ...` view save

user output
`3 4 -1 -1 -1 ...` view save

Feedback: Incorrect character on line 3 col 1: expected "2", got "-1"

Test 5

Group: 1, 2, 3, 4, 5

Verdict: ACCEPTED

input
`10 10 1 .**. ...* ******** ****.. ...` view save

correct output
`7` view save

user output
`7` view save

Test 6

Group: 2, 5

Verdict: WRONG ANSWER

input
`250 250 250 .........*****.....*.......` view save

correct output
`2 3 3 2 2 ...` view save

user output
`2 3 4 -1 -1 ...` view save

Feedback: Incorrect character on line 3 col 1: expected "3", got "4"

Test 7

Group: 2, 5

Verdict: WRONG ANSWER

input
`250 250 250 ..................**...` view save

correct output
`2 2 2 2 3 ...` view save

user output
`2 2 3 -1 -1 ...` view save

Feedback: Incorrect character on line 3 col 1: expected "2", got "3"

Test 8

Group: 2, 5

Verdict: WRONG ANSWER

input
`250 250 250 ....**.*..*......` view save

correct output
`2 3 3 3 3 ...` view save

user output
`2 3 -1 -1 -1 ...` view save

Feedback: Incorrect character on line 3 col 1: expected "3", got "-1"

Test 9

Group: 3, 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`40 40 200000 .....................*.....` view save

correct output
`2 2 2 2 2 ...` view save

user output
(empty)

Test 10

Group: 3, 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`40 40 200000 ......***....*.....` view save

correct output
`2 1 3 2 2 ...` view save

user output
(empty)

Test 11

Group: 3, 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`40 40 200000 ....*...**..**...` view save

correct output
`3 3 3 3 3 ...` view save

user output
(empty)

Test 12

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`80 80 200000 .......*........*......` view save

correct output
`2 2 2 2 2 ...` view save

user output
(empty)

Test 13

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`80 80 200000 .**......*.......*...` view save

correct output
`3 2 2 3 2 ...` view save

user output
(empty)

Test 14

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`80 80 200000 *****.**.....*...*...` view save

correct output
`2 3 1 2 2 ...` view save

user output
(empty)

Test 15

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 ..........*...........**...` view save

correct output
`3 2 2 2 2 ...` view save

user output
(empty)

Test 16

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 ...............*....**...` view save

correct output
`2 2 2 2 2 ...` view save

user output
(empty)

Test 17

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 ...***.*****..**...` view save

correct output
`3 3 2 2 2 ...` view save

user output
(empty)

Test 18

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 *******.******.**....` view save

correct output
`3 3 3 3 3 ...` view save

user output
(empty)

Test 19

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 .*****************************...` view save

correct output
`104 422 145 93 65 ...` view save

user output
(empty)

Test 20

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 ..****************************...` view save

correct output
`57 155 38 65 98 ...` view save

user output
(empty)

Test 21

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 .*****************************...` view save

correct output
`498 498 498 498 498 ...` view save

user output
(empty)

Test 22

Group: 1, 2, 3, 4, 5

Verdict: ACCEPTED

input
`10 1 10 * * . * ...` view save

correct output
`0 1 1 0 0 ...` view save

user output
`0 1 1 0 0 ...` view save

Test 23

Group: 1, 2, 3, 4, 5

Verdict: ACCEPTED

input
`1 10 10 ........*. 1 7 1 10 1 4 1 7 1 5 1 1 ...` view save

correct output
`1 1 1 1 1 ...` view save

user output
`1 1 1 1 1 ...` view save

Test 24

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 1 200000 * . * . ...` view save

correct output
`1 1 1 1 1 ...` view save

user output
(empty)

Test 25

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`1 250 200000 ..............**...` view save

correct output
`1 1 1 1 1 ...` view save

user output
(empty)

Test 26

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 .................................` view save

correct output
`2 2 2 2 2 ...` view save

user output
(empty)

Test 27

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`250 250 200000 ******************************...` view save

correct output
`0 0 0 0 0 ...` view save

user output
(empty)

Datatähti 2026 alku

Hypyt

Compiler report

Code

Test details

Test 1 (public)

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

Tasks

Submissions (20mins)