結果
問題 | No.672 最長AB列 |
ユーザー | MasuqaT |
提出日時 | 2019-05-19 22:45:01 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 26 ms / 2,000 ms |
コード長 | 5,263 bytes |
コンパイル時間 | 11,756 ms |
コンパイル使用メモリ | 402,508 KB |
実行使用メモリ | 10,344 KB |
最終ジャッジ日時 | 2024-09-17 06:34:07 |
合計ジャッジ時間 | 13,069 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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
5,376 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 | 19 ms
10,344 KB |
testcase_10 | AC | 26 ms
10,212 KB |
testcase_11 | AC | 26 ms
9,260 KB |
testcase_12 | AC | 8 ms
5,376 KB |
testcase_13 | AC | 9 ms
5,376 KB |
testcase_14 | AC | 8 ms
5,376 KB |
testcase_15 | AC | 8 ms
5,376 KB |
testcase_16 | AC | 8 ms
5,376 KB |
testcase_17 | AC | 23 ms
9,132 KB |
testcase_18 | AC | 8 ms
5,376 KB |
コンパイルメッセージ
warning: unused `Result` that must be used --> src/main.rs:201:5 | 201 | write!(writer, "{}", max); | ^^^^^^^^^^^^^^^^^^^^^^^^^ | = 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}; use std::ops::{Rem, Div, Mul}; use std::collections::HashMap; 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) } } } }); } trait GenericInteger: Copy + PartialEq + Rem<Output=Self> + Div<Output=Self> + Mul<Output=Self> { fn zero() -> Self; } macro_rules! dec_gi { () => {}; ($t:ty $(, $r:ty)*) => { impl GenericInteger for $t { fn zero() -> Self { 0 } } dec_gi![ $( $r ),* ]; }; } dec_gi![u8, u16, u32, u64, u128, usize, i8, i16, i32, i64, i128, isize]; #[allow(dead_code)] fn gcd<T>(a: T, b: T) -> T where T: GenericInteger { if b == T::zero() { a } else { gcd(b, a % b) } } #[allow(dead_code)] fn lcm<T>(a: T, b: T) -> T where T: GenericInteger { a / gcd(a, b) * b } 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, s: chars } let s: Vec<char> = s; // A -> +1, B -> -1 // let mut v: Vec<i32> = Vec::new(); // let mut current = 'x'; // let mut counter = 0; // for c in s.iter() { // if *c == current { // counter += if *c == 'A' { 1 } else { -1 }; // } else { // v.push(counter); // current = *c; // counter = if *c == 'A' { 1 } else { -1 }; // } // } // v.push(counter); // v.remove(0); // // counter = 0; // for i in 0..v.len() { // v[i] += counter; // counter = v[i]; // } // // write!(writer, "{:?}", v); // checked editor's note :( let mut v = vec![0; s.len() + 1]; let mut counter = 0; v[0] = counter; for (i, c) in s.iter().enumerate() { counter += if *c == 'A' { 1 } else { -1 }; v[i + 1] = counter; } let mut start_map = HashMap::new(); let mut end_map = HashMap::new(); for (i, c) in v.iter().enumerate() { if start_map.contains_key(c) { end_map.insert(c, i); } else { start_map.insert(c, i); } } let max = end_map.iter().map(|x| x.1 - start_map[x.0]).max().unwrap_or(0); // write!(writer, "{:?} {:?} {:?} {:?}", v, start_map, end_map, max); write!(writer, "{}", max); } #[cfg(test)] mod tests { use super::*; #[test] fn sample1() { assert_judge!(process, "AAABBA", "4"); } #[test] fn sample2() { assert_judge!(process, "ABBBBBA", "2"); } #[test] fn sample3() { assert_judge!(process, "B", "0"); } }