using System;
using System.Linq;

namespace StudyApp
{
    class Program
    {
        static void Main(string[] args)
        {
            char[] data = Console.ReadLine().ToArray();
            string[] inputs = Console.ReadLine().Split(' ');

            char first = data[int.Parse(inputs[0])];
            char second = data[int.Parse(inputs[1])];

            data[int.Parse(inputs[0])] = second;
            data[int.Parse(inputs[1])] = first;

            Console.WriteLine(data);
        }
    }
}