#683333 (Rust) No.1617 Palindrome Removal

• 問題: No.1617 Palindrome Removal
• ユーザー: silversmith
• 提出日時: 2021-07-26 00:45:38
• 言語: Rust (1.77.0 + proconio)
• 結果: AC
• 実行時間: 37 ms / 2,000 ms
• コード長: 1,111 bytes
• コンパイル時間: 23,963 ms
• コンパイル使用メモリ: 378,896 KB
• 実行使用メモリ: 6,016 KB
• 最終ジャッジ日時: 2024-07-21 09:17:52
• 合計ジャッジ時間: 17,079 ms
• ジャッジサーバーID （参考情報）: judge2 / judge1

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	19 ms; 5,248 KB
testcase_01	AC	20 ms; 5,376 KB
testcase_02	AC	35 ms; 5,760 KB
testcase_03	AC	34 ms; 5,760 KB
testcase_04	AC	37 ms; 6,016 KB
testcase_05	AC	29 ms; 5,376 KB
testcase_06	AC	5 ms; 5,376 KB
testcase_07	AC	3 ms; 5,376 KB
testcase_08	AC	1 ms; 5,376 KB
testcase_09	AC	1 ms; 5,376 KB
testcase_10	AC	34 ms; 5,888 KB
testcase_11	AC	17 ms; 5,376 KB
testcase_12	AC	21 ms; 5,376 KB
testcase_13	AC	20 ms; 5,376 KB
testcase_14	AC	1 ms; 5,376 KB
testcase_15	AC	1 ms; 5,376 KB
testcase_16	AC	1 ms; 5,376 KB
testcase_17	AC	1 ms; 5,376 KB
testcase_18	AC	1 ms; 5,376 KB
testcase_19	AC	1 ms; 5,376 KB
testcase_20	AC	1 ms; 5,376 KB
testcase_21	AC	1 ms; 5,376 KB
testcase_22	AC	1 ms; 5,376 KB
testcase_23	AC	1 ms; 5,376 KB

コンパイルメッセージ

warning: variable `S` should have a snake case name
  --> src/main.rs:11:6
   |
11 |     let S=getline();
   |         ^ help: convert the identifier to snake case (notice the capitalization): `s`
   |
   = note: `#[warn(non_snake_case)]` on by default

warning: variable `S` should have a snake case name
  --> src/main.rs:12:6
   |
12 |     let S=S.trim();
   |         ^ help: convert the identifier to snake case (notice the capitalization): `s`

warning: variable `mS` should have a snake case name
  --> src/main.rs:51:7
   |
51 |         let mS = format!("{}{}", &S[..S.len()/2], &S[S.len()/2+2..]);
   |             ^^ help: convert the identifier to snake case: `m_s`

ソースコード

use std::collections::HashSet;
use std::process;

fn getline() -> String{
	let mut __ret=String::new();
	std::io::stdin().read_line(&mut __ret).ok();
	return __ret;
}

fn main() {
	let S=getline();
	let S=S.trim();

	if S.len() == 1 {
		print!("{}", -1);
		process::exit(0);
	}

	let rev:String = S.chars().rev().collect();
		if S != rev {
			print!("{}", S.len());
			process::exit(0);
		}

	if S.len() == 2 {
		print!("{}", 0);
		process::exit(0);
	}
	if S.len() == 3 {
		print!("{}", -1);
		process::exit(0);
	}

	let char_set: HashSet<_> = S.chars().collect();
	let char_num = char_set.len();

	if char_num == 1 {
		if S.len() % 2 == 0 {
		print!("{}", 0);
		process::exit(0);
		}else {
		print!("{}", -1);
		process::exit(0);
		}
	}

	if S.len() % 2 == 0 {
		print!("{}", S.len() -2);
		process::exit(0);
	}else {
		let mS = format!("{}{}", &S[..S.len()/2], &S[S.len()/2+2..]);
		let m_char_set: HashSet<_> = mS.chars().collect();
		let m_char_num = m_char_set.len();
		if m_char_num == 1 {
		print!("{}", S.len() -2);
		process::exit(0);
		}else {
		print!("{}", S.len() -2);
		process::exit(0);
		}
	}
}