import collections

list = input().split()
count = 0
for n in list:
    if (int(n) % 5 ==0) and (int(n) % 3 ==0):
        count += 8
    elif (int(n) % 5 ==0) or (int(n) % 3 ==0):
        count += 4
    else:
        count += int(len(n))
print(count)