#785436 (Rust) No.2030 Googol Strings

• 問題: No.2030 Googol Strings
• ユーザー: koba-e964
• 提出日時: 2022-08-05 23:25:08
• 言語: Rust (1.83.0 + proconio)
• 結果: AC
• 実行時間: 15 ms / 2,000 ms
• コード長: 2,727 bytes
• コンパイル時間: 13,236 ms
• コンパイル使用メモリ: 379,188 KB
• 実行使用メモリ: 7,684 KB
• 最終ジャッジ日時: 2024-09-15 21:03:03
• 合計ジャッジ時間: 14,621 ms
• ジャッジサーバーID （参考情報）: judge2 / judge6

ファイルパターン	結果
sample	AC * 1
other	AC * 16

ソースコード

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#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::{Write, BufWriter};
// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes.by_ref().map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}
macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr,) => {};
    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}
macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => { ($(read_value!($next, $t)),*) };
    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };
    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };
    ($next:expr, usize1) => (read_value!($next, usize) - 1);
    ($next:expr, [ $t:tt ]) => {{
        let len = read_value!($next, usize);
        read_value!($next, [$t; len])
    }};
    ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error"));
}
trait Change { fn chmax(&mut self, x: Self); fn chmin(&mut self, x: Self); }
impl<T: PartialOrd> Change for T {
    fn chmax(&mut self, x: T) { if *self < x { *self = x; } }
    fn chmin(&mut self, x: T) { if *self > x { *self = x; } }
}
fn calc(s: String, t: String) -> bool {
    if s.len() == t.len() {
        return s < t;
    }
    if s.len() < t.len() {
        if t.starts_with(&s) {
            let mut tmp = s.clone();
            let mut dbl = t.clone();
            while tmp.len() < t.len() * 2 {
                tmp += &s;
            }
            dbl += &t;
            tmp.truncate(t.len() * 2);
            return tmp <= dbl;
        }
        return s < t;
    }
    if s.starts_with(&t) {
        let mut tmp = t.clone();
        let mut dbl = s.clone();
        while tmp.len() < s.len() * 2 {
            tmp += &t;
        }
        dbl += &s;
        tmp.truncate(s.len() * 2);
        return tmp > dbl;
    }
    s < t
}
fn main() {
    let out = std::io::stdout();
    let mut out = BufWriter::new(out.lock());
    macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
    input! {
        t: usize,
        xy: [(String, String); t],
    }
    for (x, y) in xy {
        let lt = calc(x, y);
        puts!("{}\n", if lt { "Y" } else { "X" });
    }
}
 
 
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