n = int(input())
s = input().split()
c = 0
for i in range(0, len(s)):
    if int(s[i]) >= 90:
        c += 1
print(c)

/**************************************************************
	Problem: 1423
	User: admin
	Language: Python
	Result: Accepted
	Time:98 ms
	Memory:34244 kb
****************************************************************/