結果
| 問題 |
No.464 PPAP
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-11-03 19:11:04 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,354 bytes |
| コンパイル時間 | 15,385 ms |
| コンパイル使用メモリ | 379,176 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-22 15:41:19 |
| 合計ジャッジ時間 | 17,469 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 21 TLE * 1 |
ソースコード
#[allow(unused_imports)]
use std::cmp::{max, min, Ordering};
#[allow(unused_imports)]
use std::collections::{HashMap, HashSet, BinaryHeap, VecDeque};
#[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 mut front = Vec::new();
let mut back = Vec::new();
{
let mut a = VecDeque::new();
let mut b = VecDeque::new();
for (i, &c) in s.iter().enumerate() {
a.push_front(c);
b.push_back(c);
if a == b {
front.push(i);
}
}
}
{
let mut a = VecDeque::new();
let mut b = VecDeque::new();
for (i, &c) in s.iter().enumerate().rev() {
a.push_front(c);
b.push_back(c);
if a == b {
back.push(i);
}
}
}
let mut ans = 0;
back.sort();
for &p in &front {
let mut a = VecDeque::new();
let mut b = VecDeque::new();
for (&c, i) in s[p + 1..].iter().zip(1..) {
a.push_front(c);
b.push_back(c);
if a == b {
ans += back.len() as u64 -
match back.binary_search(&(p + i + 2)) {
Ok(x) => x as u64,
Err(x) => x as u64,
};
}
}
}
println!("{}", ans);
}