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: Wrong Answer)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ABC049A
{
    class Program
    {
        static void Main(string[] args)
        {
            var c = Console.ReadLine();
            var a = new string[] { "a", "e", "i", "o", "u" };
            for (var i=0;i<5;i++)
            {
                if (a[i] == c)
                    Console.WriteLine("vowel");
                return;
            }
            Console.WriteLine("consonant");
        }
    }
}