# Define the cost for each digit based on the problem's requirements
digit_costs = {
    '0': 2,
    '1': 3,
    '2': 3,
    '3': 3,
    '4': 3,
    '5': 3,
    '6': 4,
    '7': 3,
    '8': 4,
    '9': 2
}

n = input().strip()
total = 0
for c in n:
    total += digit_costs[c]
print(total)