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 Julia (0.5.0) (judge verdict: Wrong Answer)

function main()
    divide = map(reverse,["dream", "dreamer", "erase", "eraser"])

    S = reverse(readline())

    ans = true
    while length(S) > 0
        is_contains = false
        for i = 1:4
            if length(divide[i]) <= length(S)
                if S[end - length(divide[i]) + 1:end] == divide[i]
                    is_contains = true
                    S = S[1:end - length(divide[i])]
                end
            end
        end

        if !is_contains
            ans = false
            break
        end
    end

    if ans
        println("YES")
    else
        println("NO")
    end
end

main()