Submission #1385265


Source Code Expand

use std::io;
use std::collections::VecDeque;

fn main() {
    let mut input = Input::new();
    let n: usize = input.next();
    let mut a: Vec<(usize, usize)> = (0..n).map(|_| input.next::<usize>()).enumerate().collect();
    a.sort_by(|a, b| a.1.cmp(&b.1));
    for i in 0..n {
        a[i].1 = i;
    }
    println!("{}",
             a.iter().filter(|&&(i, v)| i % 2 == 0 && v % 2 == 1).count());
}

struct Input {
    queue: VecDeque<String>,
}

impl Input {
    fn new() -> Input {
        Input { queue: VecDeque::new() }
    }

    fn next<T>(&mut self) -> T
        where T: std::str::FromStr,
              T::Err: std::fmt::Debug
    {
        if self.queue.is_empty() {
            let mut line = String::new();
            let _ = io::stdin().read_line(&mut line);
            for x in line.split_whitespace() {
                self.queue.push_back(String::from(x));
            }
        }
        return self.queue.pop_front().unwrap().parse::<T>().unwrap();
    }
}

Submission Info

Submission Time
Task C - BBuBBBlesort!
User hoshi524
Language Rust (1.15.1)
Score 600
Code Size 1022 Byte
Status AC
Exec Time 31 ms
Memory 6524 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 600 / 600
Status
AC × 2
AC × 24
Set Name Test Cases
Sample s1.txt, s2.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, s1.txt, s2.txt
Case Name Status Exec Time Memory
01.txt AC 31 ms 6396 KB
02.txt AC 31 ms 6396 KB
03.txt AC 31 ms 6396 KB
04.txt AC 31 ms 6396 KB
05.txt AC 28 ms 6396 KB
06.txt AC 28 ms 6396 KB
07.txt AC 28 ms 6396 KB
08.txt AC 22 ms 6396 KB
09.txt AC 21 ms 6396 KB
10.txt AC 22 ms 6396 KB
11.txt AC 21 ms 6396 KB
12.txt AC 24 ms 6396 KB
13.txt AC 24 ms 6396 KB
14.txt AC 28 ms 6524 KB
15.txt AC 28 ms 6396 KB
16.txt AC 28 ms 6396 KB
17.txt AC 28 ms 6396 KB
18.txt AC 2 ms 4352 KB
19.txt AC 2 ms 4352 KB
20.txt AC 2 ms 4352 KB
21.txt AC 2 ms 4352 KB
22.txt AC 2 ms 4352 KB
s1.txt AC 2 ms 4352 KB
s2.txt AC 2 ms 4352 KB