結果

問題 No.2494 Sum within Components
ユーザー naut3
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
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 3
other AC * 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(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())
            }
        }
    }
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0