結果
問題 | No.83 最大マッチング |
ユーザー | MasuqaT |
提出日時 | 2019-05-02 16:08:59 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 1 ms / 5,000 ms |
コード長 | 2,463 bytes |
コンパイル時間 | 11,604 ms |
コンパイル使用メモリ | 378,548 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-10 04:05:13 |
合計ジャッジ時間 | 12,458 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 0 ms
5,376 KB |
コンパイルメッセージ
warning: unused `Result` that must be used --> src/main.rs:104:9 | 104 | write!(writer, "7{}", "1".repeat((n_digits_by_1 - 1) as usize)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = 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:106:9 | 106 | write!(writer, "{}", "1".repeat(n_digits_by_1 as usize)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = 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 { (stdin = $stdin:expr, $($r:tt)*) => { let s = { let mut s = String::new(); $stdin.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); } }; } fn main() { let stdio = io::stdin(); let input = stdio.lock(); let output = io::stdout(); process(input, output) } // 0 -> 6 // 1 -> 2 // 2 -> 5 // 3 -> 5 // 4 -> 4 // 5 -> 5 // 6 -> 6 // 7 -> 3 // 8 -> 7 // 9 -> 6 // 2 -> 1 // 3 -> 7 // 4 -> 11 // 5 -> 71 // 6 -> 111 // 7 -> 711 // odd -> 7111... // even -> 1111... fn process<R, W>(mut reader: R, mut writer: W) where R: BufRead, W: Write { input! { stdin = reader, n: i32 } let n_digits_by_1 = n / 2; if n % 2 == 1 { write!(writer, "7{}", "1".repeat((n_digits_by_1 - 1) as usize)); } else { write!(writer, "{}", "1".repeat(n_digits_by_1 as usize)); } } #[cfg(test)] mod tests { use super::*; #[test] fn sample1() { assert_judge!(process, "2", "1\ "); } #[test] fn sample2() { assert_judge!(process, "3", "7\ "); } #[test] fn sample3() { assert_judge!(process, "4", "11\ "); } }