fn main() {
    let mut vs: Vec<char> = input_line_string().chars().collect();
    let swap: Vec<usize> = input_line_vc();
    vs.swap(swap[0], swap[1]);
    println!("{}", vs.iter().collect::<String>());
}

fn input_line_vc<T: std::str::FromStr>() -> Vec<T> {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

fn input_line_string() -> String {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().to_string()
}