题解 | #输入n个整数，输出其中最小的k个#

use std::io::stdin;
fn main() {
    let mut input = String::new();
    stdin().read_line(&mut input).unwrap();
    let n_k = input
        .trim()
        .split(" ")
        .map(|x| x.parse::<i32>().unwrap())
        .collect::<Vec<_>>();
    input.clear();
    stdin().read_line(&mut input).unwrap();
    let mut s = input
        .trim()
        .split(" ")
        .map(|x| x.parse::<i32>().unwrap())
        .collect::<Vec<_>>();
    s.sort();
    for i in 0..n_k[1] as usize {
        print!("{} ", s[i]);
    }
}