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

namespace B_011_50
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            new Logic_A().Start();

        }

        public class Logic_A
        {
            public void Start()
            {
                var str = Console.ReadLine().Split(' ');
                var a = Convert.ToInt32(str[0]);
                var b = str[1];
                var c = Convert.ToInt32(str[2]);

                Console.WriteLine(b[0] == '+' ? a + c : b[0] == '-' ? a - c : 0);
            }
        }
    }
}