結果
問題 | No.327 アルファベット列 |
ユーザー |
|
提出日時 | 2019-05-05 16:15:51 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 1 ms / 2,000 ms |
コード長 | 3,920 bytes |
コンパイル時間 | 12,629 ms |
コンパイル使用メモリ | 379,604 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-25 02:57:40 |
合計ジャッジ時間 | 14,407 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 50 |
コンパイルメッセージ
warning: unused `Result` that must be used --> src/main.rs:133:5 | 133 | write!(writer, "{}", chars.iter().rev().collect::<String>()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = 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)
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")}};}#[allow(unused_macros)]macro_rules! assert_eq_with_error {($left:expr, $right:expr, $precision:expr) => ({match (&$left, &$right, &$precision) {(left_val, right_val, precision_val) => {if !(*left_val - *precision_val < *right_val && *right_val < *left_val + *precision_val) {// The reborrows below are intentional. Without them, the stack slot for the// borrow is initialized even before the values are compared, leading to a// noticeable slow down.panic!(r#"assertion failed: `(left == right) +- precision`left: `{:?}`,right: `{:?}`,precision: `{:?}`"#, &*left_val, &*right_val, &*precision_val)}}}});}fn main() {let stdio = io::stdin();let input = stdio.lock();let output = io::stdout();process(input, output);}// ? [#26^1] (= 0 ~ 26^1 - 1// ?? [#26^2] (= 26^1 ~ 26^2 + 26^1 - 1// ??? [#26^3] (= 26^2 + 26^1 ~ 26^3 + 26^2 + 26^1 - 1fn process<R, W>(mut reader: R, mut writer: W) -> () whereR: BufRead,W: Write {input! {stdin = reader,n: u64}let mut rest = n;let mut chars = Vec::new();loop {let c = (rest % 26) as u8;chars.push((c + 'A' as u8) as char);if rest < 26 {break;}rest = rest / 26 - 1;}write!(writer, "{}", chars.iter().rev().collect::<String>());}#[cfg(test)]mod tests {use super::*;#[test]fn sample1() {assert_judge!(process, "0", "A\");}#[test]fn sample2() {assert_judge!(process, "25", "Z\");}#[test]fn sample3() {assert_judge!(process, "26", "AA\");}#[test]fn extra1() {assert_judge!(process, "1", "B\");}#[test]fn gen_case16() {assert_judge!(process, "5000000000", "PDULURI\");}}