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# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;

class Mainclass
{
    static void Main()
    {
        string c = Console.ReadLine();
        Console.WriteLine("aeiou".Contains(c) ? "vowel" : "consonant");
    }
}