import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;

public class averageVowels {

	public static void main(String[] args) {
		ArrayList<String> allwords = new ArrayList<String>();

		Scanner input;
		try {
			input = new Scanner(new File("vowels.txt"));

			while (input.hasNext()) {
				String word = input.next();
				allwords.add(word);
			}

			averageVowels1(allwords);

		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
	}

	public static void averageVowels1(ArrayList<String> list) {
		double countVowels = 0;
		for (int i = 0; i < list.size(); i++) {
			String word = list.get(i);
			if (word.contains("a")) {
				countVowels++;
			}
			if (word.contains("e")) {
				countVowels++;
			}
			if (word.contains("i")) {
				countVowels++;
			}
			if (word.contains("o")) {
				countVowels++;
			}
			if (word.contains("u")) {
				countVowels++;
			}

		}
		System.out.println(countVowels);
	}
}