s=0
for i in range(1000):
a=int(input())
if a==0:
break
if a%2==0 and a%7==0:
s=s+1
print(s)
школа 1747
s=0
for i in range(1000):
a=int(input())
if a==0:
break
if a%2==0 and a%7==0:
s=s+1
print(s)