CSES - Datatähti 2021 loppu - Results
Submission details
Task:Kolmijako
Sender:xnor
Submission time:2021-01-23 16:35:15 +0200
Language:Rust
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED22
#2ACCEPTED78
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2details
#2ACCEPTED0.01 s1, 2details
#3ACCEPTED0.01 s1, 2details
#4ACCEPTED0.01 s1, 2details
#5ACCEPTED0.01 s1, 2details
#6ACCEPTED0.01 s1, 2details
#7ACCEPTED0.01 s1, 2details
#8ACCEPTED0.01 s1, 2details
#9ACCEPTED0.01 s2details
#10ACCEPTED0.01 s2details
#11ACCEPTED0.01 s2details
#12ACCEPTED0.01 s2details
#13ACCEPTED0.01 s2details
#14ACCEPTED0.01 s2details
#15ACCEPTED0.01 s2details

Code

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

fn main() {
    let mut lines = io::BufReader::new(io::stdin()).lines();

    let n = lines.next().unwrap().unwrap().parse::<usize>().unwrap();

    if n % 3 == 1 {
        println!("IMPOSSIBLE")
    }

    let mut gs = Vec::new();
    for k in 1..=n {
        match (k % 6 + 6 - n % 6)%6 {
            0 | 1 => 
                gs.push(2),
            3 | 4 => gs.push(1),
            2 | 5 => gs.push(3),
             _ => ()
        }
    }

    match n % 6 {
        0 => {
            gs[1] = 1;
            gs[2] = 3;
        },
        2 => { 
            gs[0] = 2;
            gs[1] = 3;
        },
        3 => {
            gs[0] = 1;
            gs[1] = 2;
            gs[2] = 3;
        }
        5 => {
            gs[3] = 1;
            gs[1] = 2;
            gs[2] = 2;
            gs[0] = 3;
            gs[4] = 3;
        }
        _ => ()
    }

    for k in gs {
        print!("{} ", k);
    }
    println!();
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
3

correct output
1 2 3 

user output
1 2 3 

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
4

correct output
IMPOSSIBLE

user output
IMPOSSIBLE
1 1 3 2 

Test 3

Group: 1, 2

Verdict: ACCEPTED

input
5

correct output
1 3 1 3 2 

user output
3 2 2 1 3 

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
6

correct output
1 3 2 2 1 3 

user output
2 1 3 1 3 2 

Test 5

Group: 1, 2

Verdict: ACCEPTED

input
7

correct output
IMPOSSIBLE

user output
IMPOSSIBLE
2 2 3 1 1 3 2 

Test 6

Group: 1, 2

Verdict: ACCEPTED

input
8

correct output
2 3 1 2 3 3 2 1 

user output
2 3 2 3 1 1 3 2 

Test 7

Group: 1, 2

Verdict: ACCEPTED

input
9

correct output
1 2 3 1 2 3 3 2 1 

user output
1 2 3 2 3 1 1 3 2 

Test 8

Group: 1, 2

Verdict: ACCEPTED

input
10

correct output
IMPOSSIBLE

user output
IMPOSSIBLE
1 1 3 2 2 3 1 1 3 2 

Test 9

Group: 2

Verdict: ACCEPTED

input
42

correct output
1 3 2 2 1 3 1 2 3 3 2 1 1 2 3 ...

user output
2 1 3 1 3 2 2 3 1 1 3 2 2 3 1 ...

Test 10

Group: 2

Verdict: ACCEPTED

input
95

correct output
1 3 1 3 2 1 2 3 3 2 1 1 2 3 3 ...

user output
3 2 2 1 3 2 3 1 1 3 2 2 3 1 1 ...
Truncated

Test 11

Group: 2

Verdict: ACCEPTED

input
96

correct output
1 3 2 2 1 3 1 2 3 3 2 1 1 2 3 ...

user output
2 1 3 1 3 2 2 3 1 1 3 2 2 3 1 ...
Truncated

Test 12

Group: 2

Verdict: ACCEPTED

input
97

correct output
IMPOSSIBLE

user output
IMPOSSIBLE
2 2 3 1 1 3 2 2 3 1 1 3 2 2 3 ...
Truncated

Test 13

Group: 2

Verdict: ACCEPTED

input
98

correct output
2 3 1 2 3 3 2 1 1 2 3 3 2 1 1 ...

user output
2 3 2 3 1 1 3 2 2 3 1 1 3 2 2 ...
Truncated

Test 14

Group: 2

Verdict: ACCEPTED

input
99

correct output
1 2 3 1 2 3 3 2 1 1 2 3 3 2 1 ...

user output
1 2 3 2 3 1 1 3 2 2 3 1 1 3 2 ...
Truncated

Test 15

Group: 2

Verdict: ACCEPTED

input
100

correct output
IMPOSSIBLE

user output
IMPOSSIBLE
1 1 3 2 2 3 1 1 3 2 2 3 1 1 3 ...
Truncated