結果
問題 | No.2674 k-Walk on Bipartite |
ユーザー | ngtkana |
提出日時 | 2024-03-02 03:27:55 |
言語 | Rust (1.77.0 + proconio) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,052 bytes |
コンパイル時間 | 13,198 ms |
コンパイル使用メモリ | 390,144 KB |
実行使用メモリ | 15,804 KB |
最終ジャッジ日時 | 2024-09-29 22:58:20 |
合計ジャッジ時間 | 13,346 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
6,820 KB |
testcase_01 | AC | 0 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,816 KB |
testcase_03 | AC | 1 ms
6,816 KB |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 1 ms
6,820 KB |
testcase_07 | AC | 41 ms
13,104 KB |
testcase_08 | AC | 49 ms
11,264 KB |
testcase_09 | AC | 35 ms
13,056 KB |
testcase_10 | AC | 63 ms
13,028 KB |
testcase_11 | AC | 39 ms
10,880 KB |
testcase_12 | AC | 58 ms
11,776 KB |
testcase_13 | AC | 31 ms
11,640 KB |
testcase_14 | AC | 11 ms
7,680 KB |
testcase_15 | AC | 73 ms
14,336 KB |
testcase_16 | AC | 50 ms
13,792 KB |
testcase_17 | AC | 50 ms
10,880 KB |
testcase_18 | AC | 19 ms
8,704 KB |
testcase_19 | AC | 40 ms
12,576 KB |
testcase_20 | AC | 35 ms
12,560 KB |
testcase_21 | AC | 58 ms
11,904 KB |
testcase_22 | AC | 81 ms
15,804 KB |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
ソースコード
use input::input_array; use std::collections::VecDeque; use Ans::*; fn main() { let [n, m] = input_array::<usize, 2>(); let [start, end, k] = input_array::<usize, 3>(); let start = start - 1; let end = end - 1; let mut g = vec![Vec::new(); n]; for _ in 0..m { let [i, j] = input_array::<usize, 2>(); let i = i - 1; let j = j - 1; g[i].push(j); g[j].push(i); } let mut dist = vec![std::usize::MAX; g.len()]; dist[start] = 0; let mut queue = VecDeque::from(vec![start]); while let Some(x) = queue.pop_front() { for &y in &g[x] { if dist[y] == std::usize::MAX { dist[y] = dist[x] + 1; queue.push_back(y); } } } let d = dist[end]; let ans = match n { 2 => match () { () if usize::from(start == end) != (k % 2) => No, () if (start == end || m == 1) => Yes, () => Unknown, }, _ => match () { () if d == !0 => Unknown, () if d % 2 != k % 2 => No, () if k < d => Unknown, () => Yes, }, }; println!( "{}", match ans { Yes => "Yes", No => "No", Unknown => "Unknown", } ); } #[derive(Clone, Copy)] enum Ans { Yes, No, Unknown, } // input {{{ #[allow(dead_code)] mod input { use std::cell::Cell; use std::convert::TryFrom; use std::io::stdin; use std::io::BufRead; use std::io::BufReader; use std::io::Lines; use std::io::Stdin; use std::str::FromStr; use std::sync::Mutex; use std::sync::Once; type Server = Mutex<Lines<BufReader<Stdin>>>; static ONCE: Once = Once::new(); pub struct Lazy(Cell<Option<Server>>); unsafe impl Sync for Lazy {} fn line() -> String { static SYNCER: Lazy = Lazy(Cell::new(None)); ONCE.call_once(|| { SYNCER .0 .set(Some(Mutex::new(BufReader::new(stdin()).lines()))); }); unsafe { (*SYNCER.0.as_ptr()) .as_ref() .unwrap() .lock() .unwrap() .next() .unwrap() .unwrap() } } pub trait ForceFromStr: FromStr { fn force_from_str(s: &str) -> Self; } impl<T, E> ForceFromStr for T where T: FromStr<Err = E>, E: std::fmt::Debug, { fn force_from_str(s: &str) -> Self { s.parse().unwrap() } } pub fn input_array<T: ForceFromStr, const N: usize>() -> [T; N] where T: std::fmt::Debug, { <[_; N]>::try_from(input_vec()).unwrap() } pub fn input_vec<T: ForceFromStr>() -> Vec<T> { line() .split_whitespace() .map(T::force_from_str) .collect::<Vec<_>>() } pub fn input<T: ForceFromStr>() -> T { T::force_from_str(&line()) } } // }}}