using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        string replace = Console.ReadLine().Trim();
        string[] b = replace.Split('@');
        string replacement = new string('*', b[0].Length) + "@" + b[1];
        string c = Console.ReadLine();
        Console.WriteLine(c.Replace(replace, replacement));
    }
}