using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var s = ReadLine().ToCharArray();
        var c = NList;
        (s[c[0]], s[c[1]]) = (s[c[1]], s[c[0]]);
        WriteLine(string.Concat(s));
    }
}