using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace hello
{
class Program
{
static void Main(string[] args)
{
var str = "Heaveno World";
for (var i = 0; i <= 666; i++)
str = GodVersusSatan(str);
Console.WriteLine(str);
}
static string GodVersusSatan(string s)
{
if (s.Contains("Hell"))
return God(s);
else if (s.Contains("Heaven"))
return Satan(s);
return s;
}
static string God(string s)
{
return s.Replace("Hell", "Heaven");
}
static string Satan(string s)
{
return s.Replace("Heaven", "Hell");
}
}
}
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