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: Time Limit Exceeded)

using System;

public class Test
{
	public static void Main()
	{
		string s = Console.ReadLine();
		string[] sa = new string[]{"dream", "dreamer" ,"erase","eraser"};
		string t ="";
		int a = 0;
		bool flag = false;
		while(t.Length < s.Length){
			for(int i =0;i<4;i++){
				for(int j =0;j<sa[i].Length;j++){
					if(s[a + j].Equals(sa[i][j])){
						flag = true;
					
					}
					else{
						flag=false;
						break;
					}
				}
				if(flag){
					t = t + sa[i];
					flag = false;
				}
			}
		}
		Console.Write(t);
	}
}