結果

問題 No.1644 Eight Digits
コンテスト
ユーザー kenichi
提出日時 2023-09-06 17:34:25
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 6 ms / 1,000 ms
コード長 5,321 bytes
コンパイル時間 13,458 ms
コンパイル使用メモリ 400,604 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-24 12:00:49
合計ジャッジ時間 14,731 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 25
権限があれば一括ダウンロードができます

ソースコード

diff # 

use std::io::*;
use std::str::FromStr;
/*
const LOW_CASE_ALPHABET: [char; 26] = [
    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
    't', 'u', 'v', 'w', 'x', 'y', 'z',
];
*/

fn main() {
    let k: isize = read();
    let mut tmp = 0;
    let input = "12345678";
    let chars: Vec<char> = input.chars().collect();

    permute(&chars,0,chars.len(), &mut tmp, k);
    println!("{}",tmp);

}

pub fn permute(data: &[char] ,i: usize, length: usize,tmp: &mut isize,k: isize) {
    if i == length{
        let s: String = data.iter().collect();
        if stoi(s) % k == 0 {
            *tmp += 1;
        }
    }else{
        let mut j = i;
        let mut data_clone = data.to_owned();
        while j < length {
            data_clone.swap(i,j);
            permute(&data_clone,i+1,length,tmp,k);
            j += 1;
        }
    }
}
/*
pub fn perfect(value_1: usize) -> usize {
    let mut perfect_number = Vec::new();
    let mut tmp_1 = 0;
    for _i in 2..=value_1 {
        let mut tmp = 0;
        for _j in 1..=((_i as f64).powf(0.5)) as usize {
            if _i % _j == 0 {
                if _j * _j == _i {
                    tmp += _j;
                } else {
                    tmp += _j + (_i / _j);
                }
            }
        }
        tmp -= _i;

        if tmp == _i {
            perfect_number.push(_i);
        }
    }

    for _i in &perfect_number{
        if tmp_1 == perfect_number.len() - 1{
            break;
        }
        println!("{}", _i);
        tmp_1 += 1;
    }

    perfect_number[perfect_number.len() - 1]
}
*/

/*
pub fn prime_number(value_1: usize, value_2: usize) -> usize {
    let mut primary = Vec::new();
    primary.push(2);

    for _i in 2..=value_1 {
        let mut flag = 0;
        for _j in &primary {
            if _i % _j == 0 {
                flag = 1;
                break;
            }
        }
        if flag == 0 {
            primary.push(_i);
        }
        if primary.len() == value_2 {
            return primary[primary.len() - 1];
        }
    }

    0
}
*/

/*
pub fn ctoi(c: char) -> isize {
    c as isize - '0' as isize
}
*/

pub fn stoi(c: String) -> isize {
    c.parse::<isize>().unwrap()
}

/*
pub fn find_char(sentence: Vec<char>, target: char, start: isize) -> isize {
    for _i in start as usize..sentence.len() {
        if sentence[_i] == target {
            return _i as isize;
        }
    }
    -1
}
*/

/*
pub fn hex_to_binary_2(hex_string: String, x: u32) -> Option<String> {
    match i64::from_str_radix(&hex_string, x) {
        Ok(decimal) => Some(format!("{}", decimal)),
        Err(_) => None,
    }
}
*/

/*
pub fn hex_to_binary(hex_string: &str, x: u32) -> Option<String> {
    match i64::from_str_radix(hex_string, x) {
        Ok(decimal) => Some(format!("{}", decimal)),
        Err(_) => None,
    }
}
*/

/*
pub fn my_floor(x: f64) -> f64 {
    (x * 1000.0).floor() / 1000.0
}
*/

/*
pub fn upper_lower(x: char) -> char {
    let result: char;

    if x.is_uppercase() {
        result = x.to_ascii_lowercase();
    } else if x.is_lowercase() {
        result = x.to_ascii_uppercase();
    } else {
        result = x;
    }

    result
}
*/

/*
pub fn maxf_2(x: f64, y: f64) -> f64 {
    if x >= y {
        x
    } else {
        y
    }
}
*/

/*
pub fn max_2(x: isize, y: isize) -> isize {
    if x >= y {
        x
    } else {
        y
    }
}
*/

/*
pub fn min_2(x: isize, y: isize) -> isize {
    if x >= y {
        y
    } else {
        x
    }
}
*/

/*
pub fn max_3(x: isize, y: isize, z: isize) -> isize {
    if (x >= y && y >= z) || (x >= z && z >= y){
        x
    } else if (y >= x && x >= z) || (y >= z && z >= x) {
        y
    } else {
        z
    }
}
*/

/*
pub fn max_u_3(x: usize, y: usize, z: usize) -> usize {
    if (x >= y && y >= z) || (x >= z && z >= y){
        x
    } else if (y >= x && x >= z) || (y >= z && z >= x) {
        y
    } else {
        z
    }
}
*/

/*
pub fn min_3(x: isize, y: isize, z: isize) -> isize {
    if (x <= y && y <= z) || (x <= z && z <= y){
        x
    } else if (y <= x && x <= z) || (y <= z && z <= x) {
        y
    } else {
        z
    }
}
*/

/*
pub fn min_u_3(x: usize, y: usize, z: usize) -> usize {
    if (x <= y && y <= z) || (x <= z && z <= y){
        x
    } else if (y <= x && x <= z) || (y <= z && z <= x) {
        y
    } else {
        z
    }
}
*/

pub fn read_text() -> String {
    let mut word = String::new();
    std::io::stdin().read_line(&mut word).ok();
    let answer = word.trim().to_string();

    answer
}

pub fn read_array() -> Vec<char> {
    let array: String = read();
    let chars: Vec<char> = array.trim().chars().collect::<Vec<char>>();
    chars
}

pub fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin = stdin.lock();
    let token: String = stdin
        .bytes()
        .map(|c| c.expect("failed to read char") as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect();
    token.parse().ok().expect("failed to parse token")
}

pub fn read_line<T: FromStr>() -> String {
    let stdin = stdin();
    let stdin = stdin.lock();
    stdin
        .lines()
        .next()
        .expect("No line in the input")
        .expect("Failed to read line")
}
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