結果
問題 | No.2430 Damage Zone |
ユーザー |
![]() |
提出日時 | 2023-08-25 00:08:36 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 39 ms / 2,000 ms |
コード長 | 2,805 bytes |
コンパイル時間 | 15,743 ms |
コンパイル使用メモリ | 378,964 KB |
実行使用メモリ | 17,920 KB |
最終ジャッジ日時 | 2024-12-23 11:50:20 |
合計ジャッジ時間 | 15,021 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
other | AC * 28 |
コンパイルメッセージ
warning: unused `Result` that must be used --> src/main.rs:72:5 | 72 | writeln!(out, "{}", ans); | ^^^^^^^^^^^^^^^^^^^^^^^^ | = note: this `Result` may be an `Err` variant, which should be handled = note: `#[warn(unused_must_use)]` on by default = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
ソースコード
#![allow(non_snake_case, unused_imports)]use std::io::{self, prelude::*};use std::str;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<_>>()};}const MOD: usize = 998_244_353;let H = input!(usize);let W = input!(usize);let K = input!(usize);let S = (0..H).map(|_| input!(String).chars().collect::<Vec<_>>()).collect::<Vec<_>>();let mut dp = vec![vec![vec![0; K]; W]; H];dp[0][0][0] = 1;for i in 0..H {for j in 0..W {for k in 0..K {// 右if j + 1 < W {if S[i][j + 1] == '.' {dp[i][j + 1][k] += dp[i][j][k];dp[i][j + 1][k] %= MOD;} else if S[i][j + 1] == 'o' {if k + 1 < K {dp[i][j + 1][k + 1] += dp[i][j][k];dp[i][j + 1][k + 1] %= MOD;}}}// 下if i + 1 < H {if S[i + 1][j] == '.' {dp[i + 1][j][k] += dp[i][j][k];dp[i + 1][j][k] %= MOD;} else if S[i + 1][j] == 'o' {if k + 1 < K {dp[i + 1][j][k + 1] += dp[i][j][k];dp[i + 1][j][k + 1] %= MOD;}}}}}}let mut ans = 0;for k in 0..K {ans += dp[H - 1][W - 1][k];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())}}}}