use std::io::{stdin, Read};

fn main() {
	let (mut s, mut b) = (String::new(), String::new());
	stdin().read_line(&mut s).ok();
	stdin().read_to_string(&mut b).ok();
	let a = if b.chars().filter(|&c| c == 'w' || c == 'b').count() % 2 == 0 {
		s.trim().to_owned()
	} else {
		"odayukiko".replace(s.trim(), "")
	};
	println!("{}", a);
}