結果
問題 | No.2494 Sum within Components |
ユーザー |
![]() |
提出日時 | 2023-10-06 22:13:50 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 79 ms / 2,000 ms |
コード長 | 2,471 bytes |
コンパイル時間 | 12,536 ms |
コンパイル使用メモリ | 400,432 KB |
実行使用メモリ | 20,828 KB |
最終ジャッジ日時 | 2024-07-26 16:27:00 |
合計ジャッジ時間 | 13,733 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 17 |
ソースコード
#![allow(non_snake_case, unused_imports, unused_must_use)] use std::io::{self, prelude::*}; use std::str; const MOD: usize = 998_244_353; fn main() { let (stdin, stdout) = (io::stdin(), io::stdout()); let mut scan = Scanner::new(stdin.lock()); let mut out = io::BufWriter::new(stdout.lock()); macro_rules! input { ($T: ty) => { scan.token::<$T>() }; ($T: ty, $N: expr) => { (0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>() }; } let N = input!(usize); let M = input!(usize); let A = input!(usize, N); let mut graph = vec![vec![]; N]; for _ in 0..M { let u = input!(usize) - 1; let v = input!(usize) - 1; graph[u].push(v); graph[v].push(u); } let mut seen = vec![false; N]; let mut par = vec![0; N]; let mut value = vec![0; N]; let mut q = std::collections::VecDeque::new(); for i in 0..N { if seen[i] { continue; } let mut val = A[i]; seen[i] = true; q.push_front(i); par[i] = i; while let Some(now) = q.pop_front() { for &nxt in graph[now].iter() { if seen[nxt] { continue; } val += A[nxt]; val %= MOD; seen[nxt] = true; q.push_front(nxt); par[nxt] = i; } } value[i] = val; } let mut ans = 1; for i in 0..N { ans *= value[par[i]]; ans %= MOD; } writeln!(out, "{}", ans); } struct Scanner<R> { reader: R, buf_str: Vec<u8>, buf_iter: str::SplitWhitespace<'static>, } impl<R: BufRead> Scanner<R> { fn new(reader: R) -> Self { Self { reader, buf_str: vec![], buf_iter: "".split_whitespace(), } } fn token<T: str::FromStr>(&mut self) -> T { loop { if let Some(token) = self.buf_iter.next() { return token.parse().ok().expect("Failed parse"); } self.buf_str.clear(); self.reader .read_until(b'\n', &mut self.buf_str) .expect("Failed read"); self.buf_iter = unsafe { let slice = str::from_utf8_unchecked(&self.buf_str); std::mem::transmute(slice.split_whitespace()) } } } }