using System;   

static class Program

{

    public struct Processing

    {

        public string Text;

        public string Replaceable;

        public string Superseding;

    }

​

    static void Main()

    {

        Processing product = new Processing();

        product.Text = Console.ReadLine();

        product.Replaceable = Console.ReadLine();

        product.Superseding = Console.ReadLine();

        string result = GetSortByPrices(product);

        Console.WriteLine(result);

    }

    static string GetSortByPrices(Processing input)

    {

        int length = input.Text.Length;

        string result = "";

        for (int currentPrice = 0; currentPrice < length; currentPrice++) 

        {

            if (input.Text[currentPrice] == input.Replaceable)

            {

                result += input.Superseding;

            }

            else 

            {

                result += input.Text[currentPrice];

            }

        }   

        return result;

    }    

}