using System;
using System.Linq;

class Program {
  static void Main() {
    var s = Console.ReadLine().ToArray();
    var a = Console.ReadLine().Split().Select(int.Parse).ToArray();
    var t = s[a[0]];
    s[a[0]] = s[a[1]];
    s[a[1]] = t;
    Console.WriteLine(new string(s));
  }
}