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.
The first line of the input contains a single integer () denoting the number of student.
The second line contains N space-separated integers , , ..., ().
Print a single integer with a new line, the number of students who have got A+ in ICT.
5 80 89 79 100 55