結果
| 問題 |
No.470 Inverse S+T Problem
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-10-19 16:48:48 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,502 bytes |
| コンパイル時間 | 25,356 ms |
| コンパイル使用メモリ | 378,384 KB |
| 実行使用メモリ | 10,624 KB |
| 最終ジャッジ日時 | 2024-12-22 13:47:31 |
| 合計ジャッジ時間 | 25,396 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 24 TLE * 3 |
コンパイルメッセージ
warning: unnecessary parentheses around type
--> src/main.rs:127:12
|
127 | let n: (usize) = util::get();
| ^ ^
|
= note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
|
127 - let n: (usize) = util::get();
127 + let n: usize = util::get();
|
ソースコード
#[allow(unused_imports)]
use std::cmp::{max, min, Ordering};
#[allow(unused_imports)]
use std::collections::{HashMap, HashSet};
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(),
)
}
}
// std::cmp::Reverse doesn't have Clone.
#[derive(Eq, PartialEq, Clone)]
struct Rev<T>(pub T);
impl<T: PartialOrd> PartialOrd for Rev<T> {
fn partial_cmp(&self, other: &Rev<T>) -> Option<Ordering> {
other.0.partial_cmp(&self.0)
}
}
impl<T: Ord> Ord for Rev<T> {
fn cmp(&self, other: &Rev<T>) -> Ordering {
other.0.cmp(&self.0)
}
}
#[allow(unused_macros)]
macro_rules! debug {
($x: expr) => {
println!("{}: {:?}", stringify!($x), $x)
}
}
fn dfs(
u: &[Vec<char>],
i: usize,
ans: &mut Vec<(String, String)>,
memo: &mut HashSet<String>,
) -> bool {
if i == u.len() {
return true;
}
for k in 1..3 {
let l: String = u[i][..k].iter().cloned().collect();
let r: String = u[i][k..].iter().cloned().collect();
if !memo.contains(&l) && !memo.contains(&r) {
memo.insert(l.clone());
memo.insert(r.clone());
ans.push((l.clone(), r.clone()));
if dfs(u, i + 1, ans, memo) {
return true;
} else {
ans.pop();
memo.remove(&l);
memo.remove(&r);
}
}
}
return false;
}
fn main() {
let n: (usize) = util::get();
let u: Vec<Vec<char>> = (0..n).map(|_| util::line().chars().collect()).collect();
let mut ans = Vec::new();
if dfs(&u, 0, &mut ans, &mut HashSet::new()) {
for &(ref a, ref b) in &ans {
println!("{} {}", a, b);
}
} else {
println!("Impossible");
}
}