結果
| 問題 |
No.374 コイン
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-05-04 21:47:49 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 1 ms / 1,000 ms |
| コード長 | 2,720 bytes |
| コンパイル時間 | 15,684 ms |
| コンパイル使用メモリ | 376,876 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-06-23 08:32:21 |
| 合計ジャッジ時間 | 16,079 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 31 |
コンパイルメッセージ
warning: unused `Result` that must be used
--> src/main.rs:101:9
|
101 | write!(writer, "K");
| ^^^^^^^^^^^^^^^^^^^
|
= 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 `write` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: unused `Result` that must be used
--> src/main.rs:112:5
|
112 | write!(writer, "S");
| ^^^^^^^^^^^^^^^^^^^
|
= note: this `Result` may be an `Err` variant, which should be handled
= note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
ソースコード
use std::io;
use std::io::{BufRead, Write};
macro_rules! input {
(source = $s:expr, $($r:tt)*) => {
let mut iter = $s.split_whitespace();
input_inner!{iter, $($r)*}
};
(stdin = $s:expr, $($r:tt)*) => {
let s = {
let mut s = String::new();
$s.read_to_string(&mut s).unwrap();
s
};
let mut iter = s.split_whitespace();
input_inner!{iter, $($r)*}
};
}
macro_rules! input_inner {
($iter:expr) => {};
($iter:expr, ) => {};
($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
let $var = read_value!($iter, $t);
input_inner!{$iter $($r)*}
};
}
macro_rules! read_value {
($iter:expr, ( $($t:tt),* )) => {
( $(read_value!($iter, $t)),* )
};
($iter:expr, [ $t:tt ; $len:expr ]) => {
(0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
};
($iter:expr, chars) => {
read_value!($iter, String).chars().collect::<Vec<char>>()
};
($iter:expr, usize1) => {
read_value!($iter, usize) - 1
};
($iter:expr, $t:ty) => {
$iter.next().unwrap().parse::<$t>().expect("Parse error")
};
}
#[allow(unused_macros)]
macro_rules! assert_judge {
($method:ident, $input:expr, $expected:expr) => {
{
let input = $input.as_bytes();
let mut output = Vec::new();
$method(&input[..], &mut output);
let output = String::from_utf8(output).expect("Not UTF-8");
assert_eq!($expected, output);
}
};
}
#[allow(unused_macros)]
macro_rules! assert_judge_with_output {
($method:ident, $input:expr) => {
{
let input = $input.as_bytes();
let mut output = Vec::new();
$method(&input[..], &mut output);
String::from_utf8(output).expect("Not UTF-8")
}
};
}
fn main() {
let stdio = io::stdin();
let input = stdio.lock();
let output = io::stdout();
process(input, output);
}
fn process<R, W>(mut reader: R, mut writer: W) -> () where
R: BufRead,
W: Write {
input! {
stdin = reader,
r_table: usize, r_coin: usize
}
if r_table < r_coin {
// S can't put any coin at first.
write!(writer, "K");
return;
}
// if r_table * 3 <= r_coin {
// // S can put a coin at the center.
// write!(writer, "S");
// return;
// }
// S always wins?
write!(writer, "S");
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn sample1() {
assert_judge!(process, "4 6", "K");
}
#[test]
fn sample2() {
assert_judge!(process, "2048 788", "S");
}
}