题解 | #牛牛的字符菱形#

use std::io::stdin;

fn main() {
    let mut input = String::new();
    stdin().read_line(&mut input).expect("msg");
    let c = input.trim();

    for i in 1..=3 {
        println!("{}{}", " ".repeat(3 - i), c.repeat(2 * i - 1));
    }
    for i in 1..=2 {
        println!("{}{}", " ".repeat(i), c.repeat((3 - i) * 2 - 1));
    }
}