#611. List: number of elements equal to zero
You are given a list of integers. Find its **number of elements equal to zero**.
### Input
The first line has n, the second line has n integers separated by spaces.
### Output
The answer.
Examples
Input
9 4 1 -2 4 -2 -2 5 2 5
Output
0
Input
6 2 0 1 0 -2 -1
Output
2
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.