結果
| 問題 | No.588 空白と回文 | 
| コンテスト | |
| ユーザー |  | 
| 提出日時 | 2017-11-03 22:48:06 | 
| 言語 | Rust (1.83.0 + proconio) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 2 ms / 2,000 ms | 
| コード長 | 3,067 bytes | 
| コンパイル時間 | 12,797 ms | 
| コンパイル使用メモリ | 379,032 KB | 
| 実行使用メモリ | 5,248 KB | 
| 最終ジャッジ日時 | 2024-11-22 16:09:49 | 
| 合計ジャッジ時間 | 13,886 ms | 
| ジャッジサーバーID (参考情報) | judge3 / judge1 | 
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| ファイルパターン | 結果 | 
|---|---|
| other | AC * 25 | 
ソースコード
#[allow(unused_imports)]
use std::cmp::{max, min, Ordering};
#[allow(unused_imports)]
use std::collections::{HashMap, HashSet, BinaryHeap};
#[allow(unused_imports)]
use std::iter::FromIterator;
mod util {
    use std::io::stdin;
    use std::str::FromStr;
    use std::fmt::Debug;
    #[allow(dead_code)]
    pub fn line() -> String {
        let mut line: String = String::new();
        stdin().read_line(&mut line).unwrap();
        line.trim().to_string()
    }
    #[allow(dead_code)]
    pub fn get<T: FromStr>() -> T
    where
        <T as FromStr>::Err: Debug,
    {
        let mut line: String = String::new();
        stdin().read_line(&mut line).unwrap();
        line.trim().parse().unwrap()
    }
    #[allow(dead_code)]
    pub fn gets<T: FromStr>() -> Vec<T>
    where
        <T as FromStr>::Err: Debug,
    {
        let mut line: String = String::new();
        stdin().read_line(&mut line).unwrap();
        line.split_whitespace()
            .map(|t| t.parse().unwrap())
            .collect()
    }
    #[allow(dead_code)]
    pub fn get2<T: FromStr, U: FromStr>() -> (T, U)
    where
        <T as FromStr>::Err: Debug,
        <U as FromStr>::Err: Debug,
    {
        let mut line: String = String::new();
        stdin().read_line(&mut line).unwrap();
        let mut iter = line.split_whitespace();
        (
            iter.next().unwrap().parse().unwrap(),
            iter.next().unwrap().parse().unwrap(),
        )
    }
    #[allow(dead_code)]
    pub fn get3<S: FromStr, T: FromStr, U: FromStr>() -> (S, T, U)
    where
        <S as FromStr>::Err: Debug,
        <T as FromStr>::Err: Debug,
        <U as FromStr>::Err: Debug,
    {
        let mut line: String = String::new();
        stdin().read_line(&mut line).unwrap();
        let mut iter = line.split_whitespace();
        (
            iter.next().unwrap().parse().unwrap(),
            iter.next().unwrap().parse().unwrap(),
            iter.next().unwrap().parse().unwrap(),
        )
    }
}
#[allow(unused_macros)]
macro_rules! debug {
    ($x: expr) => {
        println!("{}: {:?}", stringify!($x), $x)
    }
}
fn main() {
    let s: Vec<char> = util::line().chars().collect();
    let ans = (0..s.len())
        .flat_map(|center| {
            let len1 = min(center, s.len() - center - 1);
            let len2 = min(center, s.len() - center);
            let l1 = &s[center - len1..center];
            let l2 = &s[center - len2..center];
            let r1 = &s[center + 1..center + 1 + len1];
            let r2 = &s[center..center + len2];
            vec![
                1 +
                    l1.iter()
                        .rev()
                        .zip(r1.iter())
                        .filter(|&(&c1, &c2)| c1 == c2)
                        .count() * 2,
                l2.iter()
                    .rev()
                    .zip(r2.iter())
                    .filter(|&(&c1, &c2)| c1 == c2)
                    .count() * 2,
            ].into_iter()
        })
        .max()
        .unwrap();
    println!("{}", ans);
}
            
            
            
        