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 Kotlin (1.0.0) (judge verdict: Accepted)

import java.io.PrintWriter
import java.util.*
import java.math.*
import java.lang.*

val pw = PrintWriter(System.out)

fun main(args: Array<String>) {
    val boin = listOf<Char>('a', 'e', 'i', 'o', 'u')
    val c = read()[0]
    
    println(if(boin.contains(c)) "vowel" else "consonant")
    
    pw.flush()
}

fun inputList() = 
    readLine()!!.split(" ").map(String::toInt)

fun sum_digits(num_: Long): Long {
    var num = num_
    var rtn: Long = 0
    while(num != 0.toLong()) {
        val tmp = num % 10
        rtn += tmp
        num /= 10
    }
    return rtn
}

/****** Decrared Functions ******/

// IO
fun read() = readLine()!!
fun readInt() = read().toInt()
fun readLong() = read().toLong()
fun readDouble() = read().toDouble()
fun readListOfString() = read().split(" ")
fun readListOfInt() = readListOfString().map { it.toInt() }
fun readListOfLong() = readListOfString().map { it.toLong() }
fun readListOfDouble() = readListOfString().map { it.toDouble() }

fun Double.format(digits: Int) = String.format("%.${digits}f", this)

fun println(value : Any) {
    pw.println(value)
}

fun gcd(a: Long, b: Long): Long = 
    if(b != 0L) a else gcd(b, a % b)

fun lcm(a: Long, b: Long) = 
    if(b==0L) a else gcd(b, a % b)