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 <iostream>
#include <iomanip>

#define debug(x) cout << #x << "==" << x << endl;

const int INF = 1e+9 + 7;

using namespace std;

//入力
// #define MAX_N
char c;

int main() {
  ios::sync_with_stdio(false);

  cin >> c;

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



  return 0;
}