using System;
using System.Linq ;
public class Program
{
static void Main( string[ ] args)
{
int ileLiczb42 = 0 ;
string[ ] daneWejscia = new string[ 500 ] ;
string wejscie = "" ;
string[ ] dane2;
for ( int i = 0 ; ; i++ )
{
wejscie = Console.ReadLine ( ) ;
daneWejscia[ i] = wejscie;
dane2 = daneWejscia.Where ( c => c != null ) .ToArray ( ) ;
if ( ileLiczb42 < 3 )
{
if ( dane2.Length > 1 )
{
if ( daneWejscia.Length > 2 )
{
if ( ileLiczb42 != 3 )
{
if ( ( dane2[ dane2.Length - 2 ] != "42" ) && wejscie == "42" )
{
ileLiczb42 += 1 ;
Console.WriteLine ( daneWejscia[ i] ) ;
if ( ileLiczb42 == 3 )
{
Environment.Exit ( 1 ) ;
}
}
else
{
Console.WriteLine ( daneWejscia[ i] ) ;
}
}
}
}
else
{
Console.WriteLine ( daneWejscia[ i] ) ;
}
}
}
}
}
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