CSES - Datatähti 2023 alku - Results
Submission details
Task:Kertoma
Sender:EmuBird
Submission time:2022-11-03 12:43:06 +0200
Language:Rust
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED22
#2ACCEPTED24
#3ACCEPTED54
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2, 3details
#2ACCEPTED0.00 s1, 2, 3details
#3ACCEPTED0.00 s1, 2, 3details
#4ACCEPTED0.00 s1, 2, 3details
#5ACCEPTED0.00 s1, 2, 3details
#6ACCEPTED0.00 s1, 2, 3details
#7ACCEPTED0.00 s2, 3details
#8ACCEPTED0.00 s2, 3details
#9ACCEPTED0.00 s2, 3details
#10ACCEPTED0.00 s2, 3details
#11ACCEPTED0.00 s3details
#12ACCEPTED0.00 s3details
#13ACCEPTED0.00 s3details
#14ACCEPTED0.00 s3details
#15ACCEPTED0.01 s3details
#16ACCEPTED0.01 s3details

Code

use std::io;

fn main() {
    let mut occurrences: Vec<u32> = Vec::with_capacity(10);
    let mut number_count: u32 = 0;
    {
        let mut inputline = String::new();
        io::stdin().read_line(&mut inputline).unwrap();
        for value in inputline.split_whitespace() {
            if let Ok(count) = value.parse::<u32>() {
                occurrences.push(count);
                number_count += count;
            }
        }
    }

    println!("{}", if number_count < 4 { small(&occurrences) } else { big(number_count) });
}

fn small(occurrences: &Vec<u32>) -> u32 {
    let mut factorial = 2;
    for i in 3..7 {
        if is_answer(factorial, occurrences) {
            return i-1;
        }
        factorial *= i;
    }
    0
}

fn big(number_count: u32) -> u32 {
    let n = (number_count - 1) as f64;
    let mut i = 6;
    let mut log = 2.85733249643126846023;
    while log <= n {
        i += 1;
        log += (i as f64).log10();
    }
    i
}

fn is_answer(mut factorial: u32, occurrences: &Vec<u32>) -> bool {
    let mut occurrences = occurrences.to_vec();
    while factorial > 0 {
        let num = (factorial % 10) as usize;
        if occurrences[num] <= 0 { return false; }
        occurrences[num] -= 1;
        factorial /= 10;
    }
    for count in occurrences {
        if count != 0 { return false; }
    }
    true
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
0 0 1 0 0 0 0 0 0 0

correct output
2

user output
2

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
0 0 0 0 0 0 1 0 0 0

correct output
3

user output
3

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
0 0 1 0 1 0 0 0 0 0

correct output
4

user output
4

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
2 0 1 1 0 0 1 0 2 0

correct output
10

user output
10

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
9 3 1 1 2 2 3 1 6 1

correct output
27

user output
27

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
10 4 3 4 3 2 2 4 3 7

correct output
36

user output
36

Test 7

Group: 2, 3

Verdict: ACCEPTED

input
71 53 36 30 25 29 42 24 34 29

correct output
199

user output
199

Test 8

Group: 2, 3

Verdict: ACCEPTED

input
71 33 46 38 27 45 36 21 35 35

correct output
205

user output
205

Test 9

Group: 2, 3

Verdict: ACCEPTED

input
93 38 35 26 43 54 38 25 41 34

correct output
222

user output
222

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
100 33 33 45 36 43 38 54 56 36

correct output
242

user output
242

Test 11

Group: 3

Verdict: ACCEPTED

input
3419 1797 1845 1849 1879 1791 ...

correct output
5959

user output
5959

Test 12

Group: 3

Verdict: ACCEPTED

input
4776 2695 2709 2781 2616 2753 ...

correct output
8391

user output
8391

Test 13

Group: 3

Verdict: ACCEPTED

input
20097 12282 12229 12214 12406 ...

correct output
32001

user output
32001

Test 14

Group: 3

Verdict: ACCEPTED

input
47934 29918 29878 29713 29984 ...

correct output
71718

user output
71718

Test 15

Group: 3

Verdict: ACCEPTED

input
84691 54156 54277 54533 54296 ...

correct output
123123

user output
123123

Test 16

Group: 3

Verdict: ACCEPTED

input
99098 63339 63878 64182 63904 ...

correct output
142663

user output
142663