Problem:
Score : 100 points

Problem Statement

Given a lowercase English letter c, determine whether it is a vowel. Here, there are five vowels in the English alphabet: a, e, i, o and u.

Constraints

c is a lowercase English letter.

Input

The input is given from Standard Input in the following format:

c

Output

If c is a vowel, print vowel. Otherwise, print consonant.

Sample Input 1

a

Sample Output 1

vowel

Since a is a vowel, print vowel.

Sample Input 2

z

Sample Output 2

consonant

Sample Input 3

s

Sample Output 3

consonant

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using static MyIO;


public class A
{
    public static void Main()
    {
        var c = GetString();
        var vowel = new string[] {"a", "i", "u", "e", "o"};
        for (int i = 0; i < vowel.Length; i++)
        {
            if (vowel[i] == c)
            {
                Console.WriteLine("vowel");
                return;
            }
        }
        Console.WriteLine("consonant");
    }
}

public static class MyIO
{
    private static string[] args = null;
    private static int num = -1;
    private static int used = -1;

    private static string getArg()
    {
        if (used == num)
        {
            args = Console.ReadLine().Split(' ');
            num = args.Length;
            used = 0;
        }
        return args[used++];
    }

    public static int GetInt() { return int.Parse(getArg()); }
    public static long GetLong() { return long.Parse(getArg()); }
    public static double GetDouble() { return double.Parse(getArg()); }
    public static string GetString() { return getArg(); }
}