Score : $100$ points

Problem Statement

You are given a string $S$ of length $12$. How many occurrences of ZONes does it contain as contiguous substrings?

Constraints

• $S$ is a string of length $12$ consisting of English letters.

Input

Input is given from Standard Input in the following format:

$S$

Output

Print the answer.

abcdZONefghi

1

The $5$-th through $8$-th characters of $S$ form a ZONe.

ZONeZONeZONe

3

helloAtZoner

0

The $8$-th through $11$-th characters of $S$ form a Zone, which is not a ZONe.