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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<bits/stdc++.h>

using namespace std;

#define rep(i, n) for(int i = 0; i < n; ++i)
#define all(x) (x).begin(),(x).end()
#define endl "\n"

using ll = long long;
using P = pair<int,int>;

const int MOD = 1e9 + 7;
const int INF = 1001001001;

int main (){
    char c;
    cin >> c;

    if(c == 'a' || c == 'i' || c == 'u' || c == 'e' || c == 'o'){
        cout << "vowel" << endl;
    }else{
        cout << "consonant" << endl;
    }


    return 0;
}