use std::io::stdin;

fn main() {
    let mut a = String::new();
    let mut s = String::new();
    stdin().read_line(&mut a).ok();
    stdin().read_line(&mut s).ok();
    let a = a.trim().chars().collect::<Vec<_>>();
    let s = s.trim().chars().map(|c| {
        if let Some(i) = c.to_digit(10) {
            a[i as usize]
        } else {
            c
        }
    });
    println!("{}", s.collect::<String>());
}