k = 0
for i in range(1000):
a=int(input())
if a==0:
break
if a > 9 and a < 100 and a%8==0:
k+=1
print(k)
школа 1747
k = 0
for i in range(1000):
a=int(input())
if a==0:
break
if a > 9 and a < 100 and a%8==0:
k+=1
print(k)