#https://www.facebook.com/manav.bahl.3/posts/3612914422073867

#Subscribed by Manav Bahl

string=raw_input("Enter string:")

vowels=0

for i in string:

if(i=='a' or i=='e' or i=='i' or i=='o' or i=='u' or i=='A' or i=='E' or i=='I' or i=='O' or i=='U'):

vowels=vowels+1

print("Number of vowels are:")

print(vowels)