#include<stdio.h>
#include<ctype.h>
int main(){
    char c;int k=0;
    while(scanf("%c",&c)&&c!='\n'){
        if(!isalpha(c)&&c!=' ')return printf("Invalid input"),0;
        c=tolower(c);
        if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u') k++;
    }
    printf("%d",k);
    
    return 0;}