n = input().strip()

total = 0
for c in n:
    d = int(c)
    if d == 0:
        total += 2
    elif d == 1:
        total += 3
    elif d == 2:
        total += 3
    elif d == 3:
        total += 3
    elif d == 4:
        total += 2
    elif d == 5:
        total += 3
    elif d == 6:
        total += 4
    elif d == 7:
        total += 3
    elif d == 8:
        total += 4
    elif d == 9:
        total += 3

print(total)