#include<stdio.h>
#include<ctupe.h>
int main(){
    char str[105];
    int count=0;
    fgets(str,sizeof(str),stdin);
    for(int i=0;str[i] !='\0;'i++){
        if(str[i]=='\n')
        continue;
        if(!(isalpha(str[i])||str[i]=='')){
            printf("Invalid input");
            return 0;
        }
        char ch=tolower(sre[i]);
        if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')
        count++;
    }
    print("%d",count);
    return 0;
}