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>
const long long INF = LLONG_MAX / 2;
const long long MOD = 1000000007;
const long double PI = 3.1415926;
#define FOR(i, r, n) for(int i=(ll)(r); i<(ll)(n); i++) 
#define REP(i, n) FOR(i, (0), n)
#define ALL(v) (v).begin(),(v).end()
#define ll long long int
using namespace std;
ll ans = 0, sum = 0, n, k, counter = 0, w, h, m;
string s;
vector<ll> v;
vector<pair<ll, ll>> vp;
vector<vector<ll>> vv(50, vector<ll>(50, INF));
vector<tuple<ll, ll, ll>> vt;
map<ll, ll> mp;

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