题解 | #牛牛的字符矩形#
牛牛的字符矩形
https://www.nowcoder.com/practice/2dbf0151eb71402e968a2a8e59092568
use std::io;
fn main() {
let mut str1 = String::new();
io::stdin().read_line(&mut str1).unwrap();
let mut str1 = str1.trim();
for i in 1..=3 {
println!("{}{}{}",str1,str1,str1);
}
}
