Salam is a school teacher. He takes ICT of class 8th. The head of the school wants to know how many students have got A+ in ICT. After calculating two times, he gets two different results. He becomes confused about the number of students who have got A+ in ICT. As a programmer, can you help him?

Now you have to find out that, how many students have got A+ in ICT?

We will consider A+ if a student get more than or equal to 80 marks.

Input

The first line of the input contains a single integer $N$ ($1 \le N \le 100$) denoting the number of student.

The second line contains N space-separated integers $A_1$, $A_2$, ..., $A_N$ ($0 \le A_i \le 100$).

Output

Print a single integer with a new line, the number of students who have got A+ in ICT.