#![allow(unused_macros, unused_imports)]

use proconio::marker::Chars;
macro_rules! dbg {
    ($($xs:expr),+) => {
        #[cfg(debug_assertions)]
        std::dbg!($($xs),+)
    }
}

fn main() {
    proconio::input!{
        mut s: Chars,
    }
    s.sort();
    let mut t = "kyoprotenkei90".chars().collect::<Vec<_>>();
    t.sort();
    if s == t {
        println!("Yes");
    } else {
        println!("No");
    }

}