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 Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
    static private Scanner scan = new Scanner(System.in);
    public static void main(String args[]) {
//        int int1 = Integer.parseInt(scan.next());
//        int int2 = Integer.parseInt(scan.next());
//        int int3 = Integer.parseInt(scan.next());
        String temp_str1 = "";
        String temp_str2 = "";
        int temp_int1 = 0;
        String str1 = scan.next();
        int ans_int = 0;
        String ans = "";
        double ans_dob = 0;

        if(str1.matches("[abcde]")){
            ans = "vowel ";
        }else{
            ans = "consonant";
        }

        PrintWriter out = new PrintWriter(System.out);
        out.println(ans);
        out.flush();
        scan.close();
    }
}