# coding: utf-8
# Your code here!
n = input().rstrip().split()
cnt = 0
for i in n:
    if int(i) % 3 == 0 and int(i) % 5 == 0:
        cnt += 8
    elif int(i) % 3 == 0:
        cnt += 4
    elif int(i) % 5 == 0:
        cnt += 4
    else:
        cnt += len(i)
print(cnt)