using System;

namespace yukicoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var str = Console.ReadLine();
            var idxs = Console.ReadLine().Split(' ');
            var idx_1 = int.Parse(idxs[0]);
            var idx_2 = int.Parse(idxs[1]);
            // SWAP STRING
            var chArr = str.ToCharArray();
            var tmp = chArr[idx_1];
            chArr[idx_1] = chArr[idx_2];
            chArr[idx_2] = tmp;
            str = new string(chArr);
            Console.WriteLine(str);
        }
    }
}