use std::io;

fn main() {
    let stdin = io::stdin();
    let mut buf = String::with_capacity(256);
    let mut vec: Vec<usize> = Vec::new();

    stdin.read_line(&mut buf).unwrap();
    let target: usize = buf.split_whitespace().next().unwrap().parse().unwrap();
    buf.clear();

    while let Ok(b) = stdin.read_line(&mut buf) {
        if b == 0 {
            break;
        }
        let height: usize = buf.trim().parse().unwrap();
        vec.push(height);
        buf.clear();
    }

    vec.sort_by(|a, b| b.cmp(a));

    let order_check = vec.iter()
        .zip(2..)
        .take_while(|data| &target < data.0)
        .last();

    let order = match order_check {
        Some(data) => data.1,
        None => 1
    };
    let postfix = match order % 10 {
        1 => "st",
        2 => "nd",
        3 => "rd",
        _ => "th"
    };

    println!("{}{}", order, postfix);
}