n = input().strip()
digit_ops = {
    '0': 3,
    '1': 3,
    '2': 3,
    '3': 3,
    '4': 2,
    '5': 3,
    '6': 4,
    '7': 2,
    '8': 4,
    '9': 2
}
total = 0
for c in n:
    total += digit_ops[c]
print(total)