Submission #15818101

Source Code Expand

use proconio::input;

fn main() {
    input! {
        k: i64,
    };
    let mut found = None;
    let mut x = 7;
    for i in 1..=k {
        if x % k == 0 {
            found = Some(i);
            break;
        }
        x = (x * 10 + 7) % k;
    }
    let ans = found.unwrap_or(-1);
    println!("{}", ans);
}

Submission Info

Submission Time
Task C - Repsept
User bouzuya
Language Rust (1.42.0)
Score 300
Code Size 316 Byte
Status AC
Exec Time 34 ms
Memory 2100 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 3
AC × 27
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All hand_01.txt, hand_02.txt, hand_03.txt, hand_04.txt, hand_05.txt, hand_06.txt, hand_07.txt, hand_08.txt, hand_09.txt, hand_10.txt, hand_11.txt, hand_12.txt, hand_13.txt, hand_14.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, sample_01.txt, sample_02.txt, sample_03.txt
Case Name Status Exec Time Memory
hand_01.txt AC 6 ms 2032 KiB
hand_02.txt AC 25 ms 2040 KiB
hand_03.txt AC 2 ms 1868 KiB
hand_04.txt AC 1 ms 2008 KiB
hand_05.txt AC 28 ms 2032 KiB
hand_06.txt AC 34 ms 2036 KiB
hand_07.txt AC 2 ms 2004 KiB
hand_08.txt AC 1 ms 2064 KiB
hand_09.txt AC 19 ms 2008 KiB
hand_10.txt AC 2 ms 2036 KiB
hand_11.txt AC 7 ms 2008 KiB
hand_12.txt AC 4 ms 1932 KiB
hand_13.txt AC 6 ms 1872 KiB
hand_14.txt AC 2 ms 1960 KiB
random_01.txt AC 14 ms 2100 KiB
random_02.txt AC 17 ms 1936 KiB
random_03.txt AC 31 ms 2008 KiB
random_04.txt AC 17 ms 1880 KiB
random_05.txt AC 4 ms 2044 KiB
random_06.txt AC 13 ms 2012 KiB
random_07.txt AC 3 ms 2020 KiB
random_08.txt AC 5 ms 2068 KiB
random_09.txt AC 19 ms 1956 KiB
random_10.txt AC 5 ms 2016 KiB
sample_01.txt AC 2 ms 2084 KiB
sample_02.txt AC 4 ms 1988 KiB
sample_03.txt AC 23 ms 2072 KiB