num = list(map(int,list(input())))
cnt0 = 0
cnt1 = 0
cnt2 = 0
for i in num:
    if i in [0,4,6,9]:
        cnt1 += 1
    elif i==8:
        cnt2 += 1
    else:
        cnt0 += 1
print(min(1+cnt0*2+cnt1*3+cnt2*4,2+cnt0*1+cnt1*3+cnt2*5))