#include<stdio.h>

#define IS_VOWEL(c) (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' || \
		c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U')

static inline char is_vowel(char c){
	return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' || 
		c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U';
}

/*
int is_vowel(char c){
	char *vowels = "aeiouAEIOU";
	for(char *v = vowels; *v; v++)
		if(c == *v)
			return 1;
	return 0;
}
*/

int main(int argc, char ** argv){
	int vowel_count = 0;
	for(char *cc = argv[1]; *cc; cc++)
		vowel_count += IS_VOWEL(*cc)? 1:0;
/*
		if(is_vowel(*cc))	
			vowel_count++;
*/
	printf("%d\n", vowel_count);

	return 0;
}