06. Vowels Sum

text = input()
sum = 0
for letter in text:
    if letter == 'a':
        sum += 1
    elif letter == 'e':
        sum += 2
    elif letter == 'i':
        sum += 3
    elif letter == 'o':
        sum += 4
    elif letter == 'u':
        sum += 5

print(sum)