using System;
public class Program
{
public static void Main()
int a;
Console.WriteLine("Write a number from 1 to 50");
a = int.Parse(Console.ReadLine());
switch (a)
case 6:
case 12:
case 18:
case 24:
case 30:
case 36:
case 42:
case 48:
break;
case 1:
case 2:
case 3:
case 4:
case 5:
case 7:
case 8:
case 9:
case 10:
case 11:
case 13:
case 14:
case 15:
case 16:
case 17:
case 19:
case 20:
case 21:
case 22:
case 23:
case 25:
}
