CSES - Datatähti 2025 alku

Submission details
Task:	Robotti
Sender:	onyx
Submission time:	2024-11-04 02:00:10 +0200
Language:	Rust (2021)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	RUNTIME ERROR	0
#2	RUNTIME ERROR	0

Test results
test	verdict	time	group
#1	RUNTIME ERROR	0.00 s	1, 2	details
#2	RUNTIME ERROR	0.00 s	1, 2	details
#3	ACCEPTED	0.00 s	1, 2	details
#4	ACCEPTED	0.00 s	1, 2	details
#5	RUNTIME ERROR	0.00 s	1, 2	details
#6	RUNTIME ERROR	0.00 s	1, 2	details
#7	ACCEPTED	0.00 s	1, 2	details
#8	ACCEPTED	0.00 s	1, 2	details
#9	ACCEPTED	0.00 s	1, 2	details
#10	RUNTIME ERROR	0.00 s	1, 2	details
#11	RUNTIME ERROR	0.00 s	1, 2	details
#12	ACCEPTED	0.00 s	2	details
#13	RUNTIME ERROR	0.00 s	2	details
#14	ACCEPTED	0.01 s	2	details
#15	RUNTIME ERROR	0.00 s	2	details
#16	RUNTIME ERROR	0.00 s	2	details
#17	RUNTIME ERROR	0.01 s	2	details
#18	ACCEPTED	0.02 s	2	details
#19	TIME LIMIT EXCEEDED	--	2	details
#20	ACCEPTED	0.01 s	2	details
#21	RUNTIME ERROR	0.01 s	2	details
#22	RUNTIME ERROR	0.01 s	2	details
#23	RUNTIME ERROR	0.01 s	2	details
#24	RUNTIME ERROR	0.01 s	2	details

Code

use std::io::{BufRead, BufReader};

fn main() {
    let mut amount = String::new();
    let mut reader = BufReader::new(std::io::stdin());
    reader.read_line(&mut amount).unwrap();
    let mut building = String::with_capacity(amount.trim().parse().unwrap());
    reader.read_line(&mut building).unwrap();

    let rooms: Vec<(_, _)> = building.char_indices().collect();
    let mut robot_pos = rooms.iter().position(|&x| x.1 == 'R').unwrap() as i32;
    let mut indices: Vec<_> = rooms
        .into_iter()
        .filter(|x| x.1 == '*')
        .map(|x| x.0 as i32)
        .collect();
    let mut robot_index = match indices.binary_search_by(|x| x.cmp(&robot_pos)) {
        Ok(i) => i,
        Err(i) => i,
    };
    let mut left = robot_pos - indices[robot_index - 1];
    let mut right = indices[robot_index] - robot_pos;

    let mut steps = 0;
    let mut coins = 0;
    while left != right && !(left == -1 && right == -1) {
        let next = if left < right {
            if left == -1 {
                robot_pos + right
            } else {
                robot_pos - left
            }
        } else if right == -1 {
            robot_pos - left
        } else {
            robot_pos + right
        };

        steps += i32::abs(robot_pos - next);
        coins += 1;
        indices.remove(indices.iter().position(|&x| x == next).unwrap());
        robot_pos = next;
        robot_index = match indices.binary_search_by(|x| x.cmp(&robot_pos)) {
            Ok(i) => i,
            Err(i) => i,
        };
        left = if robot_index as i32 - 1 < 0 {
            -1
        } else {
            robot_pos - indices[robot_index - 1]
        };

        right = if robot_index < indices.len() {
            indices[robot_index] - robot_pos
        } else {
            -1
        };
    }

    println!("{steps} {coins}");
}

Test details

Test 1

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1 R` view save

correct output
`0 0` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 2

Group: 1, 2

Verdict: RUNTIME ERROR

input
`10 ...R......` view save

correct output
`0 0` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 3

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`12 5` view save

user output
`12 5` view save

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
`10 *R****` view save

correct output
`0 0` view save

user output
`0 0` view save

Test 5

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1000 R................................` view save

correct output
`947 9` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 9 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 6

Group: 1, 2

Verdict: RUNTIME ERROR

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

correct output
`886 9` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 9 but the index is 9', input/code.rs:22:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 7

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`1287 400` view save

user output
`1287 400` view save

Test 8

Group: 1, 2

Verdict: ACCEPTED

input
`1000 **********.***************...` view save

correct output
`0 0` view save

user output
`0 0` view save

Test 9

Group: 1, 2

Verdict: ACCEPTED

input
`1000 ******************************...` view save

correct output
`0 0` view save

user output
`0 0` view save

Test 10

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1000 R*****************************...` view save

correct output
`999 999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 999 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 11

Group: 1, 2

Verdict: RUNTIME ERROR

input
`1000 ******************************...` view save

correct output
`999 999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 999 but the index is 999', input/code.rs:22:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 12

Group: 2

Verdict: ACCEPTED

input
`10000 .......*...................*...` view save

correct output
`10971 999` view save

user output
`10971 999` view save

Test 13

Group: 2

Verdict: RUNTIME ERROR

input
`10000 ...........................` view save

correct output
`9999 999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 999 but the index is 999', input/code.rs:22:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 14

Group: 2

Verdict: ACCEPTED

input
`10000 ...............*.....` view save

correct output
`18766 5000` view save

user output
`18766 5000` view save

Test 15

Group: 2

Verdict: RUNTIME ERROR

input
`10000 R*****************************...` view save

correct output
`9999 9999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 9999 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 16

Group: 2

Verdict: RUNTIME ERROR

input
`10000 ******************************...` view save

correct output
`9999 9999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 9999 but the index is 9999', input/code.rs:22:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 17

Group: 2

Verdict: RUNTIME ERROR

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

correct output
`0 0` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 18

Group: 2

Verdict: ACCEPTED

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

correct output
`299934 10000` view save

user output
`299934 10000` view save

Test 19

Group: 2

Verdict: TIME LIMIT EXCEEDED

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

correct output
`299998 100000` view save

user output
(empty)

Test 20

Group: 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 21

Group: 2

Verdict: RUNTIME ERROR

input
`200000 R................................` view save

correct output
`133765 3` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 22

Group: 2

Verdict: RUNTIME ERROR

input
`200000 R................................` view save

correct output
`199982 5000` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 5000 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 23

Group: 2

Verdict: RUNTIME ERROR

input
`200000 R*****************************...` view save

correct output
`199999 199999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 199999 but the index is 18446744073709551615', input/code.rs:21:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Test 24

Group: 2

Verdict: RUNTIME ERROR

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

correct output
`199999 199999` view save

user output
(empty)

Error:

thread 'main' panicked at 'index out of bounds: the len is 199999 but the index is 199999', input/code.rs:22:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Datatähti 2025 alku

Robotti

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

Tasks

Submissions (onyx)