#![allow(unused)]
use std::io::{self, Write};
pub fn input(query: &str) -> io::Result<String> {
print!("{}", query);
io::stdout().flush()?;
let mut input = String::new();
io::stdin().read_line(&mut input)?;
Ok(input.trim().to_owned())
}
fn main() {
panic!("not a binary")
}