結果

問題 No.1369 交換門松列・竹
ユーザー koba-e964
提出日時 2021-12-10 15:57:32
言語 Rust
(1.83.0 + proconio)
結果
WA  
実行時間 -
コード長 3,810 bytes
コンパイル時間 21,862 ms
コンパイル使用メモリ 382,140 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-07-18 09:45:24
合計ジャッジ時間 13,539 ms
ジャッジサーバーID
(参考情報)
judge5 / 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
sample WA * 1
other AC * 16 WA * 17
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::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::{Write, BufWriter};
// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
($($r:tt)*) => {
let stdin = std::io::stdin();
let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
let mut next = move || -> String{
bytes.by_ref().map(|r|r.unwrap() as char)
.skip_while(|c|c.is_whitespace())
.take_while(|c|!c.is_whitespace())
.collect()
};
input_inner!{next, $($r)*}
};
}
macro_rules! input_inner {
($next:expr) => {};
($next:expr,) => {};
($next:expr, $var:ident : $t:tt $($r:tt)*) => {
let $var = read_value!($next, $t);
input_inner!{$next $($r)*}
};
}
macro_rules! read_value {
($next:expr, ( $($t:tt),* )) => { ($(read_value!($next, $t)),*) };
($next:expr, [ $t:tt ; $len:expr ]) => {
(0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
};
($next:expr, chars) => {
read_value!($next, String).chars().collect::<Vec<char>>()
};
($next:expr, usize1) => (read_value!($next, usize) - 1);
($next:expr, [ $t:tt ]) => {{
let len = read_value!($next, usize);
read_value!($next, [$t; len])
}};
($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error"));
}
// For (i, j) where j - i <= 2, swappable
fn pat3(a: &[usize]) -> bool {
let n = a.len();
let mut a = a.to_vec();
let mut ans = 0;
for i in 0..n - 2 {
for j in i + 1..min(i + 3, n) {
a.swap(i, j);
let mut ok = true;
for k in max(1, max(i, 1) - 1)..min(j + 1, n - 2) + 1 {
ok &= (a[k] > a[k + 1]) == (a[k] > a[k - 1]);
}
if ok {
ans += 1;
}
a.swap(i, j);
}
if ans > 0 { return true; }
}
ans > 0
}
fn calc(mut a: Vec<usize>) -> bool {
if pat3(&a) { return true; }
let n = a.len();
let mut de = vec![];
for k in 1..n - 1 {
let ok = (a[k] > a[k + 1]) == (a[k] > a[k - 1])
&& a[k] != a[k + 1] && a[k] != a[k - 1] && a[k - 1] != a[k + 1];
if !ok { de.push(k); }
}
if de.len() > 6 { return false; }
let mut cand = vec![];
for &d in &de {
for i in d - 1..d + 2 {
cand.push(i);
}
}
cand.sort(); cand.dedup();
let m = cand.len();
for i in 0..m {
let x = cand[i];
for j in i + 1..m {
let y = cand[j];
let ok = de.iter().all(|&pos| min((pos as i64 - x as i64).abs(),
(pos as i64 - y as i64).abs())
<= 1);
if !ok { continue; }
a.swap(x, y);
let mut t = vec![];
for k in max(1, x) - 1..min(x + 2, n) {
t.push(k);
}
for k in max(1, y) - 1..min(y + 2, n) {
t.push(k);
}
t.sort_unstable(); t.dedup();
let ok = t.iter().all(|&k| {
k == 0 || k == n - 1 || (
(a[k] > a[k + 1]) == (a[k] > a[k - 1])
&& a[k] != a[k + 1]
&& a[k] != a[k - 1]
&& a[k - 1] != a[k + 1]
)
});
a.swap(x, y);
if ok { return true; }
}
}
false
}
fn main() {
let out = std::io::stdout();
let mut out = BufWriter::new(out.lock());
macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
input!(a: [[usize]]);
for a in a {
puts!("{}\n", if calc(a) { "Yes" } else { "No" });
}
}
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