#include<stdio.h>
#include<ctype.h>
int main(){
    char ch[101];
    int i, vowelCount=0;
    fgets(str, sizeof(str), stdin);
    for(i=0;str[i] !='\o';i++){
        if(isalpha(str[i]) || str[i]==' '){
            char ch=tolower(str[i];
            if(ch=='a' ||ch=='e' ||ch=='i' ||ch=='o' ||h=='u'){
                vowelCount++;
            }
        }else if (str[i]!='\n'){
            printf("Invalid Input");
            return 0;
        }
    }
    printf("%d",vowelCount);
    return 0;
}