Counting positive integers

Given a list of integers, count how many are strictly greater than zero and print the count.

Easy1ImplementationArrayNo attempts yetTime limit2sMemory limit512 MB

Description

Examples3

Problem

You are given several integers. Count how many of them are positive and print that count. Zero is not positive.

Input

The first line contains the integers, separated by spaces. The number of integers is at least 1 and at most 1,000,000, and each integer is at least -1,000,000 and at most 1,000,000.

Output

Print the number of positive integers on the first line.