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 JavaScript (node.js v5.12) (judge verdict: Accepted)

"use strict";

function main(arg){
  const VOWEL = "aiueo";
  const input = arg.trim()[0];
  console.log(VOWEL.includes(input) ? "vowel" : "consonant");
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'));