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 (Clang 3.8.0) (judge verdict: Accepted)

#include <stdio.h>

int main() {
    char c;
    scanf("%c", &c);

    int aiueo = c == 'a' || c == 'i' || c == 'u' || c == 'e' || c == 'o';
    puts(aiueo == 1 ? "vowel" : "consonant");

    return 0;
}