import java.util.Scanner;
public class VowelCount {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a sentence: ");
String sentence = scanner.nextLine();
int vowelCount = 0;
sentence = sentence.toLowerCase();
for (int i = 0; i sentence.length(); i++) {
char c = sentence.charAt(i);
if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') {
vowelCount++;
}
}
System.out.println(vowelCount);
}
}