use std::io::stdin;

fn main() {
    let mut line1: String = String::new();
    let mut line2: String = String::new();
    
    // 整数N
    stdin().read_line(&mut line1).expect("Fail.");
    let _n: i32 = line1.trim().parse().unwrap();

    stdin().read_line(&mut line2).expect("Fail.");
    let s: &str = line2.trim();
    println!("{}", &s[1..s.len()-1]);
}