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using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace _03.Problem
{
public class CubicsMessages
{
public static void Main(string[] args)
{
Regex regex = new Regex(@"^([0-9]+)([a-zA-Z]+)([^a-zA-Z]*)$");
string inputLine = Console.ReadLine();
while (inputLine != "Over!")
{
int msgLength = int.Parse(Console.ReadLine());
if (!regex.IsMatch(inputLine))
{
inputLine = Console.ReadLine();
continue;
}
Match match = regex.Match(inputLine);
string textMsg = match.Groups[2].Value;
if (textMsg.Length != msgLength)
{
inputLine = Console.ReadLine();
continue;
}
string group1 = match.Groups[1].Value;
string group2 = match.Groups[3].Value;
string numbers = match.Groups[1].Value + match.Groups[3].Value;
List<int> indexes = new List<int>();
for (int i = 0; i < numbers.Length; i++)
{
int currentIndex;
bool isNumber = int.TryParse(numbers[i].ToString(), out currentIndex);
if (isNumber)
{
indexes.Add(currentIndex);
}
}
StringBuilder result = new StringBuilder();
foreach (int index in indexes)
{
if (index < msgLength && index >= 0)
{
result.Append(textMsg[index]);
}
else
{
result.Append(" ");
}
}
Console.WriteLine("{0} == {1}", textMsg, result.ToString());
inputLine = Console.ReadLine();
}
}
}
}
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