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: Runtime Error)

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

namespace ABC137A
{
    class Program
    {
        static void Main(string[] args)
        {
            int A, B;
            var word = Console.ReadLine().Split(' ');
            A = int.Parse(word[0]);
            B = int.Parse(word[1]);
            int c = A + B;
            int d = A - B;
            int e = A * B;

            if (c > e && c > d)
                Console.WriteLine(c);
            else
                Console.WriteLine();

            if (d > c && d > e)
                Console.WriteLine(d);
            else
                Console.WriteLine();

            if (e > c && e > d)
                Console.WriteLine(e);
            else
                Console.WriteLine();

            Console.ReadKey();
        }
    }
}