#360639 (Rust) No.312 置換処理

• 問題: No.312 置換処理
• ユーザー: guricerin
• 提出日時: 2019-07-19 13:52:32
• 言語: Rust (1.83.0 + proconio)
• 結果: AC
• 実行時間: 10 ms / 2,000 ms
• コード長: 2,925 bytes
• コンパイル時間: 12,928 ms
• コンパイル使用メモリ: 387,904 KB
• 実行使用メモリ: 6,820 KB
• 最終ジャッジ日時: 2024-11-15 12:29:21
• 合計ジャッジ時間: 14,597 ms
• ジャッジサーバーID （参考情報）: judge5 / judge2

ファイルパターン	結果
other	AC * 45

ソースコード

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// Original: https://github.com/tanakh/competitive-rs
#[allow(unused_macros)]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        let mut next = || { iter.next().unwrap() };
        input_inner!{next, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}
#[allow(unused_macros)]
macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};
    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
    ($next:expr, mut $var:ident : $t:tt $($r:tt)*) => {
        let mut $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}
#[allow(unused_macros)]
macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };
    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };
    ($next:expr, [ $t:tt ]) => {
        {
            let len = read_value!($next, usize);
            (0..len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
        }
    };
    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };
    ($next:expr, bytes) => {
        read_value!($next, String).into_bytes()
    };
    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };
    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}
#[allow(dead_code)]
fn chmin<T>(x: &mut T, y: T) -> bool
where
    T: PartialOrd + Copy,
{
    *x > y && {
        *x = y;
        true
    }
}
#[allow(dead_code)]
fn chmax<T>(x: &mut T, y: T) -> bool
where
    T: PartialOrd + Copy,
{
    *x < y && {
        *x = y;
        true
    }
}
#[allow(unused_imports)]
use std::cmp::{max, min};
#[allow(unused_imports)]
use std::collections::{BTreeMap, BTreeSet, BinaryHeap, VecDeque};
fn main() {
    input! {
        n:i64
    }
    let divs = divisors(n);
    let mut ans = n;
    for &d in divs.iter() {
        if d <= 2 {
            continue;
        }
        chmin(&mut ans, d as i64);
    }
    println!("{}", ans);
}
pub fn divisors(n: i64) -> Vec<usize> {
    let mut res = vec![];
    let n = n as usize;
    for i in 1.. {
        if i * i > n {
            break;
        }
        if n % i == 0 {
            res.push(i);
            if i * i != n {
                res.push(n / i);
            }
        }
    }
    res.sort();
    res
}
 
 
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