n=int(input())
ans=0
for i in range(n):
   s=[]
   s=list(input().split())
   akai="akai" in s
   marui="marui" in s
   okii="okii" in s
   umai="umai" in s
   if akai==1 and marui==1 and okii==1 and umai==1:
       ans+=1
print(ans)