using System;

public class Hello
{
    public static void Main()
    {
        var s = Console.ReadLine().Trim();
        string[] line = Console.ReadLine().Trim().Split(' ');
        var a = int.Parse(line[0]);
        var b = int.Parse(line[1]);
        var s2 = s.ToCharArray();
        var te = s2[a];
        s2[a] = s2[b];
        s2[b] = te;
        Console.WriteLine(new string(s2));
    }
}