CSES - Datatähti 2026 loppu

Submission details
Task:	Bittijono
Sender:	asonnine
Submission time:	2026-01-17 14:51:48 +0200
Language:	Rust (2021)
Status:	READY
Result:	16

Feedback
group	verdict	score
#1	WRONG ANSWER	0
#2	ACCEPTED	16
#3	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	WRONG ANSWER	0.00 s	1, 3	details
#2	ACCEPTED	0.00 s	1, 2, 3	details
#3	WRONG ANSWER	0.00 s	1, 3	details
#4	WRONG ANSWER	0.00 s	1, 3	details
#5	WRONG ANSWER	0.00 s	1, 3	details
#6	WRONG ANSWER	0.41 s	3	details
#7	ACCEPTED	0.41 s	2, 3	details
#8	WRONG ANSWER	0.41 s	3	details
#9	ACCEPTED	0.41 s	2, 3	details
#10	ACCEPTED	0.41 s	2, 3	details
#11	WRONG ANSWER	0.42 s	3	details
#12	ACCEPTED	0.41 s	2, 3	details
#13	WRONG ANSWER	0.41 s	3	details
#14	WRONG ANSWER	0.41 s	3	details
#15	WRONG ANSWER	0.41 s	3	details
#16	ACCEPTED	0.00 s	1, 2, 3	details
#17	WRONG ANSWER	0.00 s	1, 3	details
#18	WRONG ANSWER	0.00 s	1, 3	details
#19	WRONG ANSWER	0.41 s	3	details
#20	WRONG ANSWER	0.42 s	3	details

Code

fn main() {
    let mut input = String::new();
    std::io::stdin().read_line(&mut input).unwrap();
    let mut iter = input.split_whitespace();
    iter.next();
    let a: u64 = iter.next().unwrap().parse().unwrap();
    let b: u64 = iter.next().unwrap().parse().unwrap();

    let start: Vec<bool>;
    input.clear();
    std::io::stdin().read_line(&mut input).unwrap();
    start = input.trim().chars().map(|x| x == '1').collect();

    let target: Vec<bool>;
    input.clear();
    std::io::stdin().read_line(&mut input).unwrap();
    target = input.trim().chars().map(|x| x == '1').collect();

    let diff: Vec<bool> = start
        .iter()
        .enumerate()
        .map(|(i, x)| *x != target[i])
        .collect();

    dbg!(&diff);
    if b <= a {
        println!(
            "{}",
            ([false]
                .iter()
                .chain(diff.iter().chain([false].iter())).collect::<Vec<_>>()
                .windows(2)
                .fold(0, |acc, x| acc + <bool as Into<u64>>::into(x[0] != x[1]))
                ) / 2
                * b
        );
    } else {
    }
}

Test details

Test 1 (public)

Group: 1, 3

Verdict: WRONG ANSWER

input
`8 3 5 10110001 01101000` view save

correct output
`11` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
]

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`10 644 644 0111000100 0000010111` view save

correct output
`1932` view save

user output
`1932` view save

Error:

[input/code.rs:25] &diff = [
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
]

Test 3

Group: 1, 3

Verdict: WRONG ANSWER

input
`10 493 986 0001110000 0001100001` view save

correct output
`986` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    false,
    false,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    true,
]

Test 4

Group: 1, 3

Verdict: WRONG ANSWER

input
`10 240 720 1011001110 1000000001` view save

correct output
`1200` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    false,
    false,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
]

Test 5

Group: 1, 3

Verdict: WRONG ANSWER

input
`10 3 7 1110111111 0010010101` view save

correct output
`15` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    false,
    true,
    false,
]

Test 6

Group: 3

Verdict: WRONG ANSWER

input
`100000 1 1000000000 001100110010101001010111000110...` view save

correct output
`50252` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    false,
    false,
    fa...

Test 7

Group: 2, 3

Verdict: ACCEPTED

input
`100000 1000000000 1 110010000110110100110110101011...` view save

correct output
`25055` view save

user output
`25055` view save

Error:

[input/code.rs:25] &diff = [
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    true,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    false,
    true,...

Test 8

Group: 3

Verdict: WRONG ANSWER

input
`100000 1000 1000000000 001001101010100000011110000101...` view save

correct output
`50001000` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    true,...

Test 9

Group: 2, 3

Verdict: ACCEPTED

input
`100000 1000000000 1000 101010110001010011011011101110...` view save

correct output
`24939000` view save

user output
`24939000` view save

Error:

[input/code.rs:25] &diff = [
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    false,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    false,...

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
`100000 1000000000 1000000000 001000000001000000000010110111...` view save

correct output
`25023000000000` view save

user output
`25023000000000` view save

Error:

[input/code.rs:25] &diff = [
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    true,
    true,
    false,
    true,
    false,
    false,
    false,...

Test 11

Group: 3

Verdict: WRONG ANSWER

input
`100000 123456789 987654321 100010110100011000001111001110...` view save

correct output
`5475678967593` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    true,...

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
`100000 987654321 123456789 000100110000010110111101111101...` view save

correct output
`3071481453531` view save

user output
`3071481453531` view save

Error:

[input/code.rs:25] &diff = [
    true,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    true,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    fal...

Test 13

Group: 3

Verdict: WRONG ANSWER

input
`100000 1000000 1000000000 001100110010100011000111101100...` view save

correct output
`49916000000` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    false,
    true,
    false,
    false,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    true,...

Test 14

Group: 3

Verdict: WRONG ANSWER

input
`100000 10000000 1000000000 110111101101111110100101011000...` view save

correct output
`494930000000` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    fal...

Test 15

Group: 3

Verdict: WRONG ANSWER

input
`100000 100000000 1000000000 111110000010100011011100110010...` view save

correct output
`4547300000000` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    false,
    true,
    false,
    true,
    false,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    true,
    false,
    true,
    false,
    true,
    true,
    true,
    true,
    false,
    true,
    true,
    false,
    false,
    false,
    true,
    true,
    true,
    false,
    true,
    false,
    false,
    true,
    false,
    true,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    false,
    false,
    false,
    true,
    true,
    false,
    true,
    true,
    false,
    true,
    false,
    fal...

Test 16

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1 1 1 1 1` view save

correct output
`0` view save

user output
`0` view save

Error:

[input/code.rs:25] &diff = [
    false,
]

Test 17

Group: 1, 3

Verdict: WRONG ANSWER

input
`10 600 800 0000000000 1110111111` view save

correct output
`1400` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    true,
    false,
    true,
    true,
    true,
    true,
    true,
    true,
]

Test 18

Group: 1, 3

Verdict: WRONG ANSWER

input
`10 300 599 1101001010 0011010110` view save

correct output
`1198` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
]

Test 19

Group: 3

Verdict: WRONG ANSWER

input
`100000 300000000 500000000 010011101001001010010101101101...` view save

correct output
`10000000000000` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    false,
    false,
    true,
    true,
    true,
    f...

Test 20

Group: 3

Verdict: WRONG ANSWER

input
`100000 60000 1000000000 110110111011010100001000011011...` view save

correct output
`3000000000` view save

user output
(empty)

Feedback: Output is shorter than expected
Error:

[input/code.rs:25] &diff = [
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,
    true,...

Datatähti 2026 loppu

Bittijono

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

Tasks

Submissions (asonnine)