using System;
internal class Program
{
static void Main(string[] args)
{
Console.WriteLine("Enter any character");
char a=char.Parse(Console.ReadLine());
switch (a)
{
case 'A':
Console.WriteLine("vowels");
break;
case 'E':
Console.WriteLine("vowels");
break;
case 'I':
Console.WriteLine("vowels");
break;
case 'O':
Console.WriteLine("vowels");
break;
case 'U':
Console.WriteLine("vowels");
break;
default:
Console.WriteLine("constant");
break;
}
Console.ReadLine();
}
}
