結果

問題 No.588 空白と回文
ユーザー hatoohatoo
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
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
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 #
プレゼンテーションモードにする

#[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);
}
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